Add scale factor and 2x resources from webkit and plumb through to ContentClient.

ui/compositor/test/compositor_test_support.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/compositor/test/compositor_test_support.h"
 
 #include "base/compiler_specific.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
 #include "webkit/glue/webkitplatformsupport_impl.h"
 
 namespace ui {
 
 class CompositorTestPlatformSupport:
     public NON_EXPORTED_BASE(webkit_glue::WebKitPlatformSupportImpl) {
  public:
   virtual string16 GetLocalizedString(int message_id) OVERRIDE {
     return string16();
   }
 
   virtual base::StringPiece GetDataResource(int resource_id) OVERRIDE {
     return base::StringPiece();
   }
 
+  virtual base::StringPiece GetImageResource(int resource_id,
+                                             float scale_factor) OVERRIDE {
+    return base::StringPiece();
+  }
+
   virtual void GetPlugins(
       bool refresh, std::vector<webkit::WebPluginInfo>* plugins) OVERRIDE {
   }
 
   virtual webkit_glue::ResourceLoaderBridge* CreateResourceLoader(
       const webkit_glue::ResourceLoaderBridge::RequestInfo& request_info)
       OVERRIDE {
     NOTREACHED();
     return NULL;
   }
@@ skipping 15 matching lines @@
 }
 
 void CompositorTestSupport::Terminate() {
   DCHECK(g_webkit_support);
   WebKit::shutdown();
   delete g_webkit_support;
   g_webkit_support = NULL;
 }
 
 }  // namespace ui