Implement WebKit::Platform::isThreadedCompositingEnabled()

webkit/support/test_webkit_platform_support.cc

Index: webkit/support/test_webkit_platform_support.cc
diff --git a/webkit/support/test_webkit_platform_support.cc b/webkit/support/test_webkit_platform_support.cc
index d4020cb3914d9d427b245df12a146fa0d63b634d..a1d9bfc1cd3df35221ff127e5782f5f57ddc2719 100644
--- a/webkit/support/test_webkit_platform_support.cc
+++ b/webkit/support/test_webkit_platform_support.cc
@@ -72,7 +72,8 @@ using WebKit::WebScriptController;
 TestWebKitPlatformSupport::TestWebKitPlatformSupport(bool unit_test_mode,
     WebKit::Platform* shadow_platform_delegate)
     : unit_test_mode_(unit_test_mode),
-      shadow_platform_delegate_(shadow_platform_delegate) {
+      shadow_platform_delegate_(shadow_platform_delegate),
+      threaded_compositing_enabled_(false) {
   v8::V8::SetCounterFunction(base::StatsTable::FindLocation);
 
   WebKit::initialize(this);
@@ -413,6 +414,10 @@ bool TestWebKitPlatformSupport::canAccelerate2dCanvas() {
   return true;
 }
 
+bool TestWebKitPlatformSupport::isThreadedCompositingEnabled() {
+  return threaded_compositing_enabled_;
+}
+
 double TestWebKitPlatformSupport::audioHardwareSampleRate() {
   return 44100.0;
 }