Fix the Mac build after r161777.

* gtest/xcode/Config/General.xcconfig: AspenFamily.xcconfig excludes
macosx from SUPPORTED_PLATFORMS, so add it back in ourselves.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@161841 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/ThirdParty/ChangeLog

+2014-01-12  Andy Estes  <aestes@apple.com>
+
+        Fix the Mac build after r161777.
+
+        * gtest/xcode/Config/General.xcconfig: AspenFamily.xcconfig excludes
+        macosx from SUPPORTED_PLATFORMS, so add it back in ourselves.
+
 2014-01-11  David Kilzer  <ddkilzer@apple.com>
 
         [iOS] Upstream gtest

Source/ThirdParty/gtest/xcode/Config/General.xcconfig

@@ -72,3 +72,5 @@ SDKROOT_iphonesimulator = $(SDKROOT);
 SDKROOT_macosx = $(SDKROOT_macosx_$(USE_INTERNAL_SDK));
 SDKROOT_macosx_ = macosx;
 SDKROOT_macosx_YES = macosx.internal;
+
+SUPPORTED_PLATFORMS = macosx iphoneos iphonesimulator;