Remove the forceCompositingMode setting.

Source/web/tests/FrameTestHelpers.cpp

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 254 matching lines @@
 WebViewImpl* WebViewHelper::initialize(bool enableJavascript, TestWebFrameClient* webFrameClient, WebViewClient* webViewClient, void (*updateSettingsFunc)(WebSettings*))
 {
     reset();
 
     if (!webFrameClient)
         webFrameClient = defaultWebFrameClient();
     if (!webViewClient)
         webViewClient = defaultWebViewClient();
     m_webView = WebViewImpl::create(webViewClient);
     m_webView->settings()->setJavaScriptEnabled(enableJavascript);
-    if (updateSettingsFunc) {
+    if (updateSettingsFunc)
         updateSettingsFunc(m_webView->settings());
-    } else {
+    else
         m_webView->settings()->setDeviceSupportsMouse(false);
-        m_webView->settings()->setForceCompositingMode(true);
-    }
 
     m_webView->setMainFrame(WebLocalFrameImpl::create(webFrameClient));
 
     return m_webView;
 }
 
 WebViewImpl* WebViewHelper::initializeAndLoad(const std::string& url, bool enableJavascript, TestWebFrameClient* webFrameClient, WebViewClient* webViewClient, void (*updateSettingsFunc)(WebSettings*))
 {
     initialize(enableJavascript, webFrameClient, webViewClient, updateSettingsFunc);
 
@@ skipping 41 matching lines @@
 }
 
 void TestWebViewClient::initializeLayerTreeView()
 {
     m_layerTreeView = adoptPtr(Platform::current()->unitTestSupport()->createLayerTreeViewForTesting());
     ASSERT(m_layerTreeView);
 }
 
 } // namespace FrameTestHelpers
 } // namespace blink