Fix webkit_unit_tests to use the threaded parser and enable everywhere.

Source/web/tests/CompositedLayerMappingTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 62 matching lines @@
     virtual void TearDown()
     {
         Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
         m_webViewImpl->close();
         m_mainFrame->close();
     }
 
     void navigateTo(const std::string& url)
     {
         FrameTestHelpers::loadFrame(m_webViewImpl->mainFrame(), url);
-        Platform::current()->unitTestSupport()->serveAsynchronousMockedRequests();
     }
 
     void registerMockedHttpURLLoad(const std::string& fileName)
     {
         URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(m_baseURL.c_str()), WebString::fromUTF8(fileName.c_str()));
     }
 
 protected:
     std::string m_baseURL;
     MockWebFrameClient m_mockWebFrameClient;
@@ skipping 16 matching lines @@
 
     layerElement = document->getElementById("layer-solid-color");
     renderer = toRenderLayerModelObject(layerElement->renderer());
     // CompositedLayerMapping::graphicsLayer's background color is unset if SolidColorLayer is created.
     EXPECT_EQ(Color(), renderer->layer()->compositedLayerMapping()->mainGraphicsLayer()->backgroundColor());
 }
 
 }
 
 } // namespace WebCore