Provide shared context to Platform API in renderer.

content/common/webkitplatformsupport_impl.h

Index: content/common/webkitplatformsupport_impl.h
diff --git a/content/common/webkitplatformsupport_impl.h b/content/common/webkitplatformsupport_impl.h
index 889fb753da73c7a6828c2cd6a6f5c007650c4594..de778a26aa4f8be18b7bf322a06413376818d4e7 100644
--- a/content/common/webkitplatformsupport_impl.h
+++ b/content/common/webkitplatformsupport_impl.h
@@ -11,7 +11,6 @@
 #include "webkit/glue/webkitplatformsupport_impl.h"
 
 namespace content {
-class GpuChannelHostFactory;
 
 // This is a specialization of WebKitPlatformSupportImpl that implements the
 // embedder functions in terms of ContentClient.
@@ -35,14 +34,6 @@ class CONTENT_EXPORT WebKitPlatformSupportImpl
   virtual webkit_glue::WebSocketStreamHandleBridge* CreateWebSocketBridge(
       WebKit::WebSocketStreamHandle* handle,
       webkit_glue::WebSocketStreamHandleDelegate* delegate) OVERRIDE;
-  virtual WebKit::WebGraphicsContext3D* createOffscreenGraphicsContext3D(
-      const WebKit::WebGraphicsContext3D::Attributes& attributes);
-
-  static void SetOffscreenContextFactoryForTest(
-      OffscreenContextFactory factory);
-
- protected:
-  virtual GpuChannelHostFactory* GetGpuChannelHostFactory();
 };
 
 }  // namespace content