Pull gpu service/client shared memory buffer code to GpuMemoryBufferSupport

content/common/gpu/gpu_memory_buffer_factory.h

Index: content/common/gpu/gpu_memory_buffer_factory.h
diff --git a/content/common/gpu/gpu_memory_buffer_factory.h b/content/common/gpu/gpu_memory_buffer_factory.h
index b02ae20d79a9c451707a245eecbe4965c7bbfadb..566269f3a684974c67807ca6e3fdc5926d674fe2 100644
--- a/content/common/gpu/gpu_memory_buffer_factory.h
+++ b/content/common/gpu/gpu_memory_buffer_factory.h
@@ -25,10 +25,6 @@ class CONTENT_EXPORT GpuMemoryBufferFactory {
  public:
   virtual ~GpuMemoryBufferFactory() {}
 
-  // Returns the native GPU memory buffer factory type. Returns EMPTY_BUFFER
-  // type if native buffers are not supported.
-  static gfx::GpuMemoryBufferType GetNativeType();
-
   // Creates a new factory instance for native GPU memory buffers.
   static scoped_ptr<GpuMemoryBufferFactory> CreateNativeType();