Adding UMA for sync IPCs

content/renderer/renderer_webkitplatformsupport_impl.h

Index: content/renderer/renderer_webkitplatformsupport_impl.h
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.h b/content/renderer/renderer_webkitplatformsupport_impl.h
index 9d788894e06ef5ceba0ee8dace2faeaf8d80c41a..f125b0957326c6f10cdb63aee9b6994058bc7b45 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.h
+++ b/content/renderer/renderer_webkitplatformsupport_impl.h
@@ -21,10 +21,6 @@ namespace content {
 class GamepadSharedMemoryReader;
 }
 
-namespace IPC {
-class SyncMessage;
-}
-
 namespace webkit_glue {
 class WebClipboardImpl;
 }
@@ -102,9 +98,6 @@ class CONTENT_EXPORT RendererWebKitPlatformSupportImpl
  private:
   bool CheckPreparsedJsCachingEnabled() const;
 
-  // Helper function to send synchronous message from any thread.
-  static bool SendSyncMessageFromAnyThread(IPC::SyncMessage* msg);
-
   scoped_ptr<RendererClipboardClient> clipboard_client_;
   scoped_ptr<webkit_glue::WebClipboardImpl> clipboard_;