diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
index bb85c15eceffa1765ae7c999a4af124d6308baac..b80546ef2f4faa57fdf6a7b161ef7f160f1bbda3 100644
--- a/Source/WebCore/ChangeLog
+++ b/Source/WebCore/ChangeLog
@@ -1,3 +1,23 @@
+2012-02-03  Kentaro Hara  <haraken@chromium.org>
+
+        Add the "CPP" prefix to CPP specific IDL attributes
+        https://bugs.webkit.org/show_bug.cgi?id=77707
+
+        Reviewed by Adam Barth.
+
+        This patch adds the "CPP" prefix to a CPP specific IDL attribute.
+        Specifically, this patch renames [PureInterface] to [CPPPureInterface]
+
+        No tests. No change in behavior.
+
+        * bindings/scripts/CodeGeneratorCPP.pm:
+        (GenerateHeader):
+        (GenerateImplementation):
+        * css/MediaQueryListListener.idl:
+        * dom/EventListener.idl:
+        * dom/EventTarget.idl:
+        * dom/NodeFilter.idl:
+
 2012-01-27  Alexander Pavlov  <apavlov@chromium.org>
 
         Implement touch event emulation in the WebCore layer
diff --git a/Source/WebCore/bindings/scripts/CodeGeneratorCPP.pm b/Source/WebCore/bindings/scripts/CodeGeneratorCPP.pm
index b30fe74de04c3d52f4c9d85456b1c4396b47e529..71aaaa49f47bcb01430e485728fa3bbb53d17371 100644
--- a/Source/WebCore/bindings/scripts/CodeGeneratorCPP.pm
+++ b/Source/WebCore/bindings/scripts/CodeGeneratorCPP.pm
@@ -481,7 +481,7 @@ sub GenerateHeader
                 $parameterIndex++;
             }
             $functionSig .= ")";
-            if ($dataNode->extendedAttributes->{"PureInterface"}) {
+            if ($dataNode->extendedAttributes->{"CPPPureInterface"}) {
                 push(@interfaceFunctions, "    virtual " . $functionSig . " = 0;\n");
             }
             my $functionDeclaration = $functionSig;
@@ -513,9 +513,9 @@ sub GenerateHeader
 
     push(@headerContent, "};\n\n");
 
-    # for PureInterface classes also add the interface that the client code needs to
+    # for CPPPureInterface classes also add the interface that the client code needs to
     # implement
-    if ($dataNode->extendedAttributes->{"PureInterface"}) {
+    if ($dataNode->extendedAttributes->{"CPPPureInterface"}) {
         push(@headerContent, "class WebUser$interfaceName {\n");
         push(@headerContent, "public:\n");
         push(@headerContent, "    virtual void ref() = 0;\n");
@@ -529,7 +529,7 @@ sub GenerateHeader
     my $namespace = GetNamespaceForClass($implClassName);
     push(@headerContent, "$namespace" . "::$implClassName* toWebCore(const $className&);\n");
     push(@headerContent, "$className toWebKit($namespace" . "::$implClassName*);\n");
-    if ($dataNode->extendedAttributes->{"PureInterface"}) {
+    if ($dataNode->extendedAttributes->{"CPPPureInterface"}) {
         push(@headerContent, "$className toWebKit(WebUser$interfaceName*);\n");
     }
     push(@headerContent, "\n#endif\n");
@@ -783,8 +783,8 @@ sub GenerateImplementation
     # - Functions
     if ($numFunctions > 0) {
         foreach my $function (@{$dataNode->functions}) {
-            # Treat PureInterface as Custom as well, since the WebCore versions will take a script context as well
-            next if ShouldSkipType($function) || $dataNode->extendedAttributes->{"PureInterface"};
+            # Treat CPPPureInterface as Custom as well, since the WebCore versions will take a script context as well
+            next if ShouldSkipType($function) || $dataNode->extendedAttributes->{"CPPPureInterface"};
             AddIncludesForType($function->signature->type);
 
             my $functionName = $function->signature->name;
diff --git a/Source/WebCore/css/MediaQueryListListener.idl b/Source/WebCore/css/MediaQueryListListener.idl
index dfe659b0d2b6c2932b22a251e831f952e751f7c7..99026080dbef99841f9c9f23806f4bb5bf9ff962 100644
--- a/Source/WebCore/css/MediaQueryListListener.idl
+++ b/Source/WebCore/css/MediaQueryListListener.idl
@@ -21,7 +21,7 @@ module view {
     interface [
         NoStaticTables,
         ObjCProtocol,
-        PureInterface,
+        CPPPureInterface,
         OmitConstructor
     ] MediaQueryListListener {
         void queryChanged(in [Optional=CallWithDefaultValue] MediaQueryList list);
diff --git a/Source/WebCore/dom/EventListener.idl b/Source/WebCore/dom/EventListener.idl
index 023777bf3943257e9d3bc6624597e310d0e66932..21a7b1f90485f426026c5aef3d137f4c7afcc04c 100644
--- a/Source/WebCore/dom/EventListener.idl
+++ b/Source/WebCore/dom/EventListener.idl
@@ -24,7 +24,7 @@ module events {
     interface [
         NoStaticTables,
         ObjCProtocol,
-        PureInterface,
+        CPPPureInterface,
         OmitConstructor
     ] EventListener {
         void               handleEvent(in Event evt);
diff --git a/Source/WebCore/dom/EventTarget.idl b/Source/WebCore/dom/EventTarget.idl
index 8c683da1ee007ce1880d90926f7012092011ae3b..712b3b1b812e483a0f8a602e4860cd72165e2b56 100644
--- a/Source/WebCore/dom/EventTarget.idl
+++ b/Source/WebCore/dom/EventTarget.idl
@@ -23,7 +23,7 @@ module events {
     // Introduced in DOM Level 2:
     interface [
         ObjCProtocol,
-        PureInterface,
+        CPPPureInterface,
         OmitConstructor
     ] EventTarget {
         [OldStyleObjC] void addEventListener(in DOMString type, 
diff --git a/Source/WebCore/dom/NodeFilter.idl b/Source/WebCore/dom/NodeFilter.idl
index 38dac10f0354bf920060138e040c90a9ba17c484..0d796124d866e576b6e109146fa3cce2f7ce736e 100644
--- a/Source/WebCore/dom/NodeFilter.idl
+++ b/Source/WebCore/dom/NodeFilter.idl
@@ -25,7 +25,7 @@ module traversal {
         CustomMarkFunction,
         CustomNativeConverter,
         ObjCProtocol,
-        PureInterface
+        CPPPureInterface
     ] NodeFilter {
         // Constants returned by acceptNode
         const short               FILTER_ACCEPT                  = 1;