Provide shared context to Platform API in renderer.

content/renderer/renderer_webkitplatformsupport_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
@@ skipping 80 matching lines @@
       WebKit::WebRTCPeerConnectionHandlerClient* client);
   virtual WebKit::WebMediaStreamCenter* createMediaStreamCenter(
       WebKit::WebMediaStreamCenterClient* client);
   virtual bool canHyphenate(const WebKit::WebString& locale);
   virtual size_t computeLastHyphenLocation(const char16* characters,
       size_t length,
       size_t before_index,
       const WebKit::WebString& locale);
   virtual bool processMemorySizesInBytes(
       size_t* private_bytes, size_t* shared_bytes);
+  virtual WebKit::WebGraphicsContext3D* createOffscreenGraphicsContext3D(
+      const WebKit::WebGraphicsContext3D::Attributes& attributes);
+  virtual WebKit::WebGraphicsContext3D* sharedOffscreenGraphicsContext3D();
 
   // Disables the WebSandboxSupport implementation for testing.
   // Tests that do not set up a full sandbox environment should call
   // SetSandboxEnabledForTesting(false) _before_ creating any instances
   // of this class, to ensure that we don't attempt to use sandbox-related
   // file descriptors or other resources.
   //
   // Returns the previous |enable| value.
   static bool SetSandboxEnabledForTesting(bool enable);
 
   // Set WebGamepads to return when sampleGamepads() is invoked.
   static void SetMockGamepadsForTesting(const WebKit::WebGamepads& pads);
 
- protected:
-  virtual GpuChannelHostFactory* GetGpuChannelHostFactory() OVERRIDE;
-
  private:
   bool CheckPreparsedJsCachingEnabled() const;
 
   scoped_ptr<RendererClipboardClient> clipboard_client_;
   scoped_ptr<webkit_glue::WebClipboardImpl> clipboard_;
 
   class FileUtilities;
   scoped_ptr<FileUtilities> file_utilities_;
 
   class MimeRegistry;
@@ skipping 22 matching lines @@
   scoped_ptr<WebKit::WebBlobRegistry> blob_registry_;
 
   scoped_ptr<GamepadSharedMemoryReader> gamepad_shared_memory_reader_;
 
   scoped_ptr<content::Hyphenator> hyphenator_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_