Remove WebGraphicsContext3D getter from cc::ContextProvider

cc/test/test_context_provider.h

Index: cc/test/test_context_provider.h
diff --git a/cc/test/test_context_provider.h b/cc/test/test_context_provider.h
index 42907259e88d0d4836fe92b3b278f14b1e132d82..e543d5f980373350f7e2fb8c99fcaaf8b16189cb 100644
--- a/cc/test/test_context_provider.h
+++ b/cc/test/test_context_provider.h
@@ -14,8 +14,6 @@
 #include "cc/test/test_context_support.h"
 #include "gpu/command_buffer/client/gles2_interface_stub.h"
 
-namespace blink { class WebGraphicsContext3D; }
-
 namespace cc {
 class TestWebGraphicsContext3D;
 class TestGLES2Interface;
@@ -31,7 +29,6 @@ class TestContextProvider : public ContextProvider {
 
   virtual bool BindToCurrentThread() OVERRIDE;
   virtual Capabilities ContextCapabilities() OVERRIDE;
-  virtual blink::WebGraphicsContext3D* Context3d() OVERRIDE;
   virtual gpu::gles2::GLES2Interface* ContextGL() OVERRIDE;
   virtual gpu::ContextSupport* ContextSupport() OVERRIDE;
   virtual class GrContext* GrContext() OVERRIDE;