Add the necessary plumbing mechanisms to ensure proper WebGL support inside the <browser> tag, whic…

content/renderer/pepper/pepper_platform_context_3d_impl.h

Index: content/renderer/pepper/pepper_platform_context_3d_impl.h
diff --git a/content/renderer/pepper/pepper_platform_context_3d_impl.h b/content/renderer/pepper/pepper_platform_context_3d_impl.h
index 59fa85ecb4f1a4210340847fcb5e41a9b31b83f0..1374075f0c18b9cc52d9fe91b2300406aa9db100 100644
--- a/content/renderer/pepper/pepper_platform_context_3d_impl.h
+++ b/content/renderer/pepper/pepper_platform_context_3d_impl.h
@@ -35,7 +35,8 @@ class PlatformContext3DImpl
       PepperParentContextProvider* parent_context_provider);
   virtual ~PlatformContext3DImpl();
 
-  virtual bool Init(const int32* attrib_list) OVERRIDE;
+  virtual bool Init(const int32* attrib_list,
+                    CommandBufferProxy* share_buffer) OVERRIDE;
   virtual unsigned GetBackingTextureId() OVERRIDE;
   virtual bool IsOpaque() OVERRIDE;
   virtual gpu::CommandBuffer* GetCommandBuffer() OVERRIDE;