Use ContextProvider subclass to provide WGC3D pointers

content/renderer/webgraphicscontext3d_provider_impl.h

Index: content/renderer/webgraphicscontext3d_provider_impl.h
diff --git a/content/renderer/webgraphicscontext3d_provider_impl.h b/content/renderer/webgraphicscontext3d_provider_impl.h
index 504d88a9eec2e39cf757e623c919d04c99ca110f..a3bef673a31c4e4bc4d08a56a86287b26a7ce731 100644
--- a/content/renderer/webgraphicscontext3d_provider_impl.h
+++ b/content/renderer/webgraphicscontext3d_provider_impl.h
@@ -10,17 +10,14 @@
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3DProvider.h"
 
-namespace cc {
-class ContextProvider;
-}
-
 namespace content {
+class ContextProviderWebContext;
 
 class CONTENT_EXPORT WebGraphicsContext3DProviderImpl
     : public NON_EXPORTED_BASE(blink::WebGraphicsContext3DProvider) {
  public:
   explicit WebGraphicsContext3DProviderImpl(
-      scoped_refptr<cc::ContextProvider> provider);
+      scoped_refptr<ContextProviderWebContext> provider);
   virtual ~WebGraphicsContext3DProviderImpl();
 
   // WebGraphicsContext3DProvider implementation.
@@ -28,7 +25,7 @@ class CONTENT_EXPORT WebGraphicsContext3DProviderImpl
   virtual GrContext* grContext() OVERRIDE;
 
  private:
-  scoped_refptr<cc::ContextProvider> provider_;
+  scoped_refptr<ContextProviderWebContext> provider_;
 };
 
 }  // namespace content