diff --git a/Source/WTF/ChangeLog b/Source/WTF/ChangeLog
index 5fd1f32b68c535a613102a4a0680a69267247b14..a468372b4850be411ab2b1c97aee4af78ba92c4b 100644
--- a/Source/WTF/ChangeLog
+++ b/Source/WTF/ChangeLog
@@ -1,3 +1,33 @@
+2013-01-22  Roger Fong  <roger_fong@apple.com>
+
+        WTF project files and property sheets for getting WebKit to compile in VS2010.
+        https://bugs.webkit.org/show_bug.cgi?id=106986
+
+        Reviewed by Timothy Horton and Brent Fulgham.
+
+        * WTF.vcproj/WTF.sln:
+        * WTF.vcxproj: Added.
+        * WTF.vcxproj/WTF.vcxproj: Added.
+        * WTF.vcxproj/WTF.vcxproj.filters: Added.
+        * WTF.vcxproj/WTF.vcxproj.user: Added.
+        * WTF.vcxproj/WTFCommon.props: Added.
+        * WTF.vcxproj/WTFDebug.props: Added.
+        * WTF.vcxproj/WTFGenerated.make: Added.
+        * WTF.vcxproj/WTFGenerated.vcxproj: Added.
+        * WTF.vcxproj/WTFGenerated.vcxproj.filters: Added.
+        * WTF.vcxproj/WTFGenerated.vcxproj.user: Added.
+        * WTF.vcxproj/WTFGeneratedCommon.props: Added.
+        * WTF.vcxproj/WTFGeneratedDebug.props: Added.
+        * WTF.vcxproj/WTFGeneratedRelease.props: Added.
+        * WTF.vcxproj/WTFPostBuild.cmd: Added.
+        * WTF.vcxproj/WTFPreBuild.cmd: Added.
+        * WTF.vcxproj/WTFPreLink.cmd: Added.
+        * WTF.vcxproj/WTFRelease.props: Added.
+        * WTF.vcxproj/build-generated-files.sh: Added.
+        * WTF.vcxproj/copy-files.cmd: Added.
+        * WTF.vcxproj/work-around-vs-dependency-tracking-bugs.py: Added.
+        * config.h:
+
 2013-01-22  David Kilzer  <ddkilzer@apple.com>
 
         Fix DateMath.cpp to compile with -Wshorten-64-to-32
diff --git a/Source/WTF/WTF.vcproj/WTF.sln b/Source/WTF/WTF.vcproj/WTF.sln
index 76dc6310f1bf69c655be677343027e862a7607b1..0fb6cfc5653691440ad29628c5b50da34cf5a4b2 100644
--- a/Source/WTF/WTF.vcproj/WTF.sln
+++ b/Source/WTF/WTF.vcproj/WTF.sln
@@ -1,12 +1,9 @@
 
-Microsoft Visual Studio Solution File, Format Version 9.00
-# Visual Studio 2005
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "WTFGenerated", "WTFGenerated.vcproj", "{5AE5F5E4-782D-4F63-B4D7-3977B52B9950}"
+Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual Studio 2010
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "WTFGenerated", "WTFGenerated.vcxproj", "{5AE5F5E4-782D-4F63-B4D7-3977B52B9950}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "WTF", "WTF.vcproj", "{AA8A5A85-592B-4357-BC60-E0E91E026AF6}"
-	ProjectSection(ProjectDependencies) = postProject
-		{5AE5F5E4-782D-4F63-B4D7-3977B52B9950} = {5AE5F5E4-782D-4F63-B4D7-3977B52B9950}
-	EndProjectSection
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "WTF", "WTF.vcxproj", "{AA8A5A85-592B-4357-BC60-E0E91E026AF6}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/Source/WTF/WTF.vcxproj/WTF.vcxproj b/Source/WTF/WTF.vcxproj/WTF.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..52f63d74d91fa2be49f35850187eeaf741e67da3
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTF.vcxproj
@@ -0,0 +1,343 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\wtf\ArrayBuffer.cpp" />
+    <ClCompile Include="..\wtf\ArrayBufferView.cpp" />
+    <ClCompile Include="..\wtf\Assertions.cpp" />
+    <ClCompile Include="..\wtf\BitVector.cpp" />
+    <ClCompile Include="..\wtf\CryptographicallyRandomNumber.cpp" />
+    <ClCompile Include="..\wtf\CurrentTime.cpp" />
+    <ClCompile Include="..\wtf\DataLog.cpp" />
+    <ClCompile Include="..\wtf\DateMath.cpp" />
+    <ClCompile Include="..\wtf\DecimalNumber.cpp" />
+    <ClCompile Include="..\wtf\dtoa.cpp" />
+    <ClCompile Include="..\wtf\dtoa\bignum-dtoa.cc" />
+    <ClCompile Include="..\wtf\dtoa\bignum.cc" />
+    <ClCompile Include="..\wtf\dtoa\cached-powers.cc" />
+    <ClCompile Include="..\wtf\dtoa\diy-fp.cc" />
+    <ClCompile Include="..\wtf\dtoa\double-conversion.cc" />
+    <ClCompile Include="..\wtf\dtoa\fast-dtoa.cc" />
+    <ClCompile Include="..\wtf\dtoa\fixed-dtoa.cc" />
+    <ClCompile Include="..\wtf\dtoa\strtod.cc" />
+    <ClCompile Include="..\wtf\DynamicAnnotations.cpp" />
+    <ClCompile Include="..\wtf\FastMalloc.cpp" />
+    <ClCompile Include="..\wtf\FilePrintStream.cpp" />
+    <ClCompile Include="..\wtf\GregorianDateTime.cpp" />
+    <ClCompile Include="..\wtf\HashTable.cpp" />
+    <ClCompile Include="..\wtf\MainThread.cpp" />
+    <ClCompile Include="..\wtf\MD5.cpp" />
+    <ClCompile Include="..\wtf\MediaTime.cpp" />
+    <ClCompile Include="..\wtf\MemoryInstrumentation.cpp" />
+    <ClCompile Include="..\wtf\MetaAllocator.cpp" />
+    <ClCompile Include="..\wtf\NullPtr.cpp" />
+    <ClCompile Include="..\wtf\NumberOfCores.cpp" />
+    <ClCompile Include="..\wtf\OSAllocatorWin.cpp" />
+    <ClCompile Include="..\wtf\OSRandomSource.cpp" />
+    <ClCompile Include="..\wtf\PageAllocationAligned.cpp" />
+    <ClCompile Include="..\wtf\PageBlock.cpp" />
+    <ClCompile Include="..\wtf\ParallelJobsGeneric.cpp" />
+    <ClCompile Include="..\wtf\PrintStream.cpp" />
+    <ClCompile Include="..\wtf\RAMSize.cpp" />
+    <ClCompile Include="..\wtf\RandomNumber.cpp" />
+    <ClCompile Include="..\wtf\RefCountedLeakCounter.cpp" />
+    <ClCompile Include="..\wtf\SHA1.cpp" />
+    <ClCompile Include="..\wtf\SizeLimits.cpp" />
+    <ClCompile Include="..\wtf\StackBounds.cpp" />
+    <ClCompile Include="..\wtf\StringExtras.cpp" />
+    <ClCompile Include="..\wtf\StringPrintStream.cpp" />
+    <ClCompile Include="..\wtf\TCSystemAlloc.cpp" />
+    <ClCompile Include="..\wtf\text\AtomicString.cpp" />
+    <ClCompile Include="..\wtf\text\Base64.cpp" />
+    <ClCompile Include="..\wtf\text\CString.cpp" />
+    <ClCompile Include="..\wtf\text\StringBuilder.cpp" />
+    <ClCompile Include="..\wtf\text\StringImpl.cpp" />
+    <ClCompile Include="..\wtf\text\StringStatics.cpp" />
+    <ClCompile Include="..\wtf\text\WTFString.cpp" />
+    <ClCompile Include="..\wtf\Threading.cpp" />
+    <ClCompile Include="..\wtf\ThreadingWin.cpp" />
+    <ClCompile Include="..\wtf\threadspecificWin.cpp" />
+    <ClCompile Include="..\wtf\threads\BinarySemaphore.cpp" />
+    <ClCompile Include="..\wtf\threads\win\BinarySemaphoreWin.cpp" />
+    <ClCompile Include="..\wtf\TypeTraits.cpp" />
+    <ClCompile Include="..\wtf\unicode\icu\CollatorICU.cpp" />
+    <ClCompile Include="..\wtf\unicode\UTF8.cpp" />
+    <ClCompile Include="..\wtf\win\MainThreadWin.cpp" />
+    <ClCompile Include="..\wtf\win\OwnPtrWin.cpp" />
+    <ClCompile Include="..\wtf\WTFThreadData.cpp" />
+  </ItemGroup>
+  <ItemGroup>
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+    <ClInclude Include="..\wtf\AVLTree.h" />
+    <ClInclude Include="..\wtf\BitArray.h" />
+    <ClInclude Include="..\wtf\Bitmap.h" />
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+    <ClInclude Include="..\wtf\BlockStack.h" />
+    <ClInclude Include="..\wtf\BloomFilter.h" />
+    <ClInclude Include="..\wtf\BoundsCheckedPointer.h" />
+    <ClInclude Include="..\wtf\BumpPointerAllocator.h" />
+    <ClInclude Include="..\wtf\CheckedArithmetic.h" />
+    <ClInclude Include="..\wtf\CheckedBoolean.h" />
+    <ClInclude Include="..\wtf\Compiler.h" />
+    <ClInclude Include="..\wtf\Complex.h" />
+    <ClInclude Include="..\wtf\CryptographicallyRandomNumber.h" />
+    <ClInclude Include="..\wtf\CurrentTime.h" />
+    <ClInclude Include="..\wtf\DataLog.h" />
+    <ClInclude Include="..\wtf\DateMath.h" />
+    <ClInclude Include="..\wtf\DecimalNumber.h" />
+    <ClInclude Include="..\wtf\Decoder.h" />
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+    <ClInclude Include="..\wtf\HashFunctions.h" />
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+    <ClInclude Include="..\wtf\MediaTime.h" />
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+    <ClInclude Include="..\wtf\MemoryInstrumentationArrayBufferView.h" />
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+    <ClInclude Include="..\wtf\MemoryInstrumentationHashMap.h" />
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+    <None Include="WTFPreBuild.cmd" />
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diff --git a/Source/WTF/WTF.vcxproj/WTF.vcxproj.filters b/Source/WTF/WTF.vcxproj/WTF.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..1982dad7efe484594beca2fbc48acaf2231c671a
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTF.vcxproj.filters
@@ -0,0 +1,738 @@
+<?xml version="1.0" encoding="utf-8"?>
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+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\RefPtrHashMap.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\RetainPtr.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\SaturatedArithmetic.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\SegmentedVector.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\SentinelLinkedList.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\SHA1.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\SinglyLinkedList.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\StackBounds.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\StaticConstructors.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\StdLibExtras.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\StringExtras.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\StringHasher.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\StringPrintStream.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\TCPackedCache.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\TCPageMap.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\TCSpinLock.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\TCSystemAlloc.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\TemporaryChange.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\Threading.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\ThreadingPrimitives.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\ThreadRestrictionVerifier.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\TypeTraits.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\Uint16Array.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\Uint32Array.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\Uint8Array.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\UnusedParam.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\ValueCheck.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\Vector.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\wtf\VMTags.h">
+      <Filter>wtf</Filter>
+    </ClInclude>
+    <ClInclude Include="..\WTF\config.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="WTFPostBuild.cmd" />
+    <None Include="WTFPreBuild.cmd" />
+    <None Include="WTFPreLink.cmd" />
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTF.vcxproj.user b/Source/WTF/WTF.vcxproj/WTF.vcxproj.user
new file mode 100644
index 0000000000000000000000000000000000000000..945f86990f9b0888947862c7561e4dd2c5093b71
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTF.vcxproj.user
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LocalDebuggerCommand />
+    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LocalDebuggerCommand>
+    </LocalDebuggerCommand>
+    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LocalDebuggerCommand />
+    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+  </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFCommon.props b/Source/WTF/WTF.vcxproj/WTFCommon.props
new file mode 100644
index 0000000000000000000000000000000000000000..d7150faffb1727c77e11f9c3907271d8118c1c55
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFCommon.props
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <OutDir>$(ConfigurationBuildDir)\lib\</OutDir>
+    <TargetExt>.lib</TargetExt>
+  </PropertyGroup>
+  <ItemGroup />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <AdditionalIncludeDirectories>../;../wtf/;../wtf/threads/;../wtf/unicode/;$(ConfigurationBuildDir)\include\private;$(ConfigurationBuildDir)\include\JavaScriptCore;$(WebKit_Libraries)\include\pthreads;$(WebKit_Libraries)\include\private;$(WebKit_Libraries)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;__STD_C;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ForcedIncludeFiles>%(ForcedIncludeFiles)</ForcedIncludeFiles>
+      <DisableSpecificWarnings>%(DisableSpecificWarnings)</DisableSpecificWarnings>
+      <PrecompiledHeaderFile>
+      </PrecompiledHeaderFile>
+    </ClCompile>
+    <Lib>
+      <AdditionalDependencies>user32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <OutputFile>$(OutDir)\$(ProjectName)$(WebKitConfigSuffix).lib</OutputFile>
+      <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
+      <UseUnicodeResponseFiles>true</UseUnicodeResponseFiles>
+      <SubSystem>Windows</SubSystem>
+    </Lib>
+    <Bscmake>
+      <OutputFile>$(OutDir)\$(TargetName).bsc</OutputFile>
+    </Bscmake>
+  </ItemDefinitionGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFDebug.props b/Source/WTF/WTF.vcxproj/WTFDebug.props
new file mode 100644
index 0000000000000000000000000000000000000000..10e9911564fc6f5341b07d5d7b1131045f40a89c
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFDebug.props
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(WebKit_Libraries)\tools\vsprops\FeatureDefines.props" />
+    <Import Project="$(WebKit_Libraries)\tools\vsprops\common.props" />
+    <Import Project="$(WebKit_Libraries)\tools\vsprops\debug.props" />
+    <Import Project="WTFCommon.props" />
+  </ImportGroup>
+  <PropertyGroup />
+  <PropertyGroup />
+  <ItemDefinitionGroup>
+    <Bscmake />
+  </ItemDefinitionGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFGenerated.make b/Source/WTF/WTF.vcxproj/WTFGenerated.make
new file mode 100644
index 0000000000000000000000000000000000000000..cb994bdca65a22309799473a4edb87f1b2d8720a
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFGenerated.make
@@ -0,0 +1,13 @@
+all:
+    touch "%ConfigurationBuildDir%\buildfailed"
+    bash build-generated-files.sh "%ConfigurationBuildDir%" "$(WEBKIT_LIBRARIES)"
+!IF "$(OFFICIAL_BUILD)"!="1"
+    bash -c "python work-around-vs-dependency-tracking-bugs.py"
+!ENDIF
+    copy-files.cmd
+
+    -del "%ConfigurationBuildDir%\buildfailed"
+
+clean:
+    -del "%ConfigurationBuildDir%\buildfailed"
+    copy-files.cmd clean
diff --git a/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj b/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj
new file mode 100644
index 0000000000000000000000000000000000000000..dd33bea9ebf3ba4fba3dc8286a117be75929c1c4
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="build-generated-files.sh" />
+    <None Include="copy-files.cmd" />
+    <None Include="work-around-vs-dependency-tracking-bugs.py" />
+    <None Include="WTFGenerated.make" />
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{F7366596-0520-4433-B8FF-D843E31E5199}</ProjectGuid>
+    <Keyword>MakeFileProj</Keyword>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Makefile</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Makefile</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="WTFGeneratedDebug.props" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="WTFGeneratedRelease.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <NMakeOutput />
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <NMakeOutput />
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <BuildLog />
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <BuildLog />
+  </ItemDefinitionGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj.filters b/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj.filters
new file mode 100644
index 0000000000000000000000000000000000000000..d901ea5d264744d8535a5876281072ff29d3c091
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj.filters
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <None Include="build-generated-files.sh" />
+    <None Include="copy-files.cmd" />
+    <None Include="work-around-vs-dependency-tracking-bugs.py" />
+    <None Include="WTFGenerated.make" />
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj.user b/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj.user
new file mode 100644
index 0000000000000000000000000000000000000000..50dfae5ab59be76770f56aeb960c37ebb26ae529
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFGenerated.vcxproj.user
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LocalDebuggerCommand />
+    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
+  </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFGeneratedCommon.props b/Source/WTF/WTF.vcxproj/WTFGeneratedCommon.props
new file mode 100644
index 0000000000000000000000000000000000000000..0b9cf3537e66331ab05890f56dfc0eab8542d8d5
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFGeneratedCommon.props
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets" />
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <PropertyGroup />
+  <PropertyGroup />
+  <PropertyGroup Label="Configuration">
+    <OutDir>$(ConfigurationBuildDir)\lib\</OutDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup>
+    <BuildLog />
+  </ItemDefinitionGroup>
+  <ItemGroup />
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFGeneratedDebug.props b/Source/WTF/WTF.vcxproj/WTFGeneratedDebug.props
new file mode 100644
index 0000000000000000000000000000000000000000..ffff17d150a10f05f5925465bf3bb7071bc1053c
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFGeneratedDebug.props
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets">
+	<Import Project="$(WebKit_Libraries)\tools\vsprops\FeatureDefines.props" />
+	<Import Project="$(WebKit_Libraries)\tools\vsprops\common.props" />
+	<Import Project="$(WebKit_Libraries)\tools\vsprops\debug.props" />
+    <Import Project="WTFGeneratedCommon.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <ItemDefinitionGroup />
+  <ItemGroup />
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFGeneratedRelease.props b/Source/WTF/WTF.vcxproj/WTFGeneratedRelease.props
new file mode 100644
index 0000000000000000000000000000000000000000..628950650545f06fb0993e57176db603ab4d1be5
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFGeneratedRelease.props
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets">
+	<Import Project="$(WebKit_Libraries)\tools\vsprops\FeatureDefines.props" />
+	<Import Project="$(WebKit_Libraries)\tools\vsprops\common.props" />
+	<Import Project="$(WebKit_Libraries)\tools\vsprops\release.props" />
+	<Import Project="$(WebKit_Libraries)\tools\vsprops\releaseproduction.props" />
+    <Import Project="WTFGeneratedCommon.props" />	
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup />
+  <ItemGroup />
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/WTFPostBuild.cmd b/Source/WTF/WTF.vcxproj/WTFPostBuild.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..26707cac614bb9bcff73dae351fd087091b67020
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFPostBuild.cmd
@@ -0,0 +1 @@
+if exist "%CONFIGURATIONBUILDDIR%\buildfailed" del "%CONFIGURATIONBUILDDIR%\buildfailed"
diff --git a/Source/WTF/WTF.vcxproj/WTFPreBuild.cmd b/Source/WTF/WTF.vcxproj/WTFPreBuild.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..a77077674878e1064eec72cf5aa1b3667300794b
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFPreBuild.cmd
@@ -0,0 +1,6 @@
+%SystemDrive%\cygwin\bin\which.exe bash
+if errorlevel 1 set PATH=%SystemDrive%\cygwin\bin;%PATH%
+cmd /c
+if exist "%CONFIGURATIONBUILDDIR%\buildfailed" grep XX%PROJECTNAME%XX "%CONFIGURATIONBUILDDIR%\buildfailed"
+if errorlevel 1 exit 1
+echo XX%PROJECTNAME%XX > "%CONFIGURATIONBUILDDIR%\buildfailed"
diff --git a/Source/WTF/WTF.vcxproj/WTFPreLink.cmd b/Source/WTF/WTF.vcxproj/WTFPreLink.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/Source/WTF/WTF.vcxproj/WTFRelease.props b/Source/WTF/WTF.vcxproj/WTFRelease.props
new file mode 100644
index 0000000000000000000000000000000000000000..ba041ac28785eb6e069655953a488e779f3a4fca
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/WTFRelease.props
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(WebKit_Libraries)\tools\vsprops\FeatureDefines.props" />
+    <Import Project="$(WebKit_Libraries)\tools\vsprops\common.props" />
+    <Import Project="$(WebKit_Libraries)\tools\vsprops\release.props" />
+    <Import Project="$(WebKit_Libraries)\tools\vsprops\releaseproduction.props" />
+    <Import Project="WTFCommon.props" />
+  </ImportGroup>
+  <PropertyGroup />
+  <ItemDefinitionGroup>
+    <Bscmake />
+  </ItemDefinitionGroup>
+</Project>
\ No newline at end of file
diff --git a/Source/WTF/WTF.vcxproj/build-generated-files.sh b/Source/WTF/WTF.vcxproj/build-generated-files.sh
new file mode 100644
index 0000000000000000000000000000000000000000..9abcb653321a7d572eb3f9880cf0d9ea68b0ff41
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/build-generated-files.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/bash
+
+# Determine whether we have the versioned ICU 4.0 or the unversioned ICU 4.4
+UNVERSIONED_ICU_LIB_PATH=$(cygpath -u "${WEBKIT_LIBRARIES}/lib/libicuuc.lib")
+ICUVERSION_H_PATH=$(cygpath -u "${CONFIGURATIONBUILDDIR}/include/private/ICUVersion.h")
+if test \( ! -f "${ICUVERSION_H_PATH}" \) -o \( -f "${UNVERSIONED_ICU_LIB_PATH}" -a \( "${UNVERSIONED_ICU_LIB_PATH}" -nt "${ICUVERSION_H_PATH}" \) \)
+then
+    mkdir -p "$(dirname "${ICUVERSION_H_PATH}")"
+    test ! -f "${UNVERSIONED_ICU_LIB_PATH}"
+    echo "#define U_DISABLE_RENAMING $?" > "${ICUVERSION_H_PATH}"
+fi
diff --git a/Source/WTF/WTF.vcxproj/copy-files.cmd b/Source/WTF/WTF.vcxproj/copy-files.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..f958bc48a1f1ab1ec3f220d95940cd095498c889
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/copy-files.cmd
@@ -0,0 +1,40 @@
+@echo off
+
+set PrivateHeadersDirectory=%CONFIGURATIONBUILDDIR%\include\private
+set PGOPrivateHeadersDirectory=%CONFIGURATIONBUILDDIR%\..\Release_PGO\include\private
+set WTF_Directory=%Webkit_Source%\WTF
+
+if "%1" EQU "clean" goto :clean
+if "%1" EQU "rebuild" call :clean
+
+for %%d in (
+    wtf
+    wtf\dtoa
+    wtf\text
+    wtf\threads
+    wtf\unicode
+    wtf\unicode\icu
+) do (
+    mkdir "%PrivateHeadersDirectory%\%%d" 2>NUL
+    xcopy /y /d %Webkit_Source%\WTF\%%d\*.h "%PrivateHeadersDirectory%\%%d" >NUL
+)
+
+echo Copying other files...
+for %%f in (
+    ..\JavaScriptCore\create_hash_table
+    wtf\text\AtomicString.cpp
+    wtf\text\StringBuilder.cpp
+    wtf\text\StringImpl.cpp
+    wtf\text\WTFString.cpp
+) do (
+    echo F | xcopy /y /d %WTF_Directory%\%%f "%PrivateHeadersDirectory%\%%f" >NUL
+    echo F | xcopy /y /d %WTF_Directory%\%%f "%PGOPrivateHeadersDirectory%\%%f" >NUL
+)
+
+goto :EOF
+
+:clean
+
+echo Deleting copied files...
+if exist "%PrivateHeadersDirectory%" rmdir /s /q "%PrivateHeadersDirectory%" >NUL
+if exist "%PGOPrivateHeadersDirectory%" rmdir /s /q "%PGOPrivateHeadersDirectory%" >NUL
diff --git a/Source/WTF/WTF.vcxproj/work-around-vs-dependency-tracking-bugs.py b/Source/WTF/WTF.vcxproj/work-around-vs-dependency-tracking-bugs.py
new file mode 100644
index 0000000000000000000000000000000000000000..c8a4c458862133a6ecceadd1fa2485bdf2245959
--- /dev/null
+++ b/Source/WTF/WTF.vcxproj/work-around-vs-dependency-tracking-bugs.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+
+import glob
+import os
+import re
+import sys
+
+
+# It's fragile to rely on the location of this script to find the top-level
+# source directory.
+TOP_LEVEL_DIRECTORY = os.environ['WEBKIT_SOURCE'];
+WEBKIT_LIBRARIES = os.environ['WEBKIT_LIBRARIES'];
+
+def main():
+    react_to_vsprops_changes()
+    react_to_webkit1_interface_changes()
+
+
+def react_to_vsprops_changes():
+    vsprops_directory = os.path.join(WEBKIT_LIBRARIES, 'tools', 'vsprops')
+    newest_vsprops_time = mtime_of_newest_file_matching_glob(os.path.join(vsprops_directory, '*.vsprops'))
+
+    obj_directory = os.path.join(os.environ['CONFIGURATIONBUILDDIR'], 'obj')
+
+    # Visual Studio isn't smart enough to figure out it needs to rebuild these file types when
+    # .vsprops files change (even if we touch wtf/Platform.h below), so we delete them to force them
+    # to be rebuilt.
+    for extension in ('dep', 'manifest', 'pch', 'res'):
+        for filepath in glob.iglob(os.path.join(obj_directory, '*', '*.%s' % extension)):
+            delete_if_older_than(filepath, newest_vsprops_time)
+
+    # Touch wtf/Platform.h so all files will be recompiled. This is necessary
+    # to pick up changes to preprocessor macros (e.g., ENABLE_*).
+    wtf_platform_h = os.path.join(TOP_LEVEL_DIRECTORY, 'WTF', 'wtf', 'Platform.h')
+    touch_if_older_than(wtf_platform_h, newest_vsprops_time)
+
+
+def react_to_webkit1_interface_changes():
+    interfaces_directory = os.path.join(TOP_LEVEL_DIRECTORY, 'WebKit', 'win', 'Interfaces')
+    newest_idl_time = mtime_of_newest_file_matching_glob(os.path.join(interfaces_directory, '*.idl'))
+    # WebKit.idl includes all the other IDL files, so needs to be rebuilt if any IDL file changes.
+    # But Visual Studio isn't smart enough to figure this out, so we touch WebKit.idl to ensure that
+    # it gets rebuilt.
+    touch_if_older_than(os.path.join(interfaces_directory, 'WebKit.idl'), newest_idl_time)
+
+
+def mtime_of_newest_file_matching_glob(glob_pattern):
+    files = glob.glob(glob_pattern)
+    assert len(files), "Couldn't find any files matching glob %s" % glob_pattern
+    return max(map(os.path.getmtime, files))
+
+
+def delete_if_older_than(path, reference_time):
+    if os.path.getmtime(path) < reference_time:
+        print 'Deleting %s' % path
+        os.remove(path)
+
+
+def touch_if_older_than(path, reference_time):
+    if os.path.getmtime(path) < reference_time:
+        print 'Touching %s' % path
+        os.utime(path, None)
+
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/Source/WTF/config.h b/Source/WTF/config.h
index dabdd0ea7035a4ff040c429db8553b86fa16a27f..08765146dca49fc506947738da0190239ec5075e 100644
--- a/Source/WTF/config.h
+++ b/Source/WTF/config.h
@@ -33,11 +33,11 @@
 #if OS(WINDOWS)
 
 #ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0500
+#define _WIN32_WINNT 0x0501
 #endif
 
 #ifndef WINVER
-#define WINVER 0x0500
+#define WINVER 0x0501
 #endif
 
 // If we don't define these, they get defined in windef.h.