Pull gpu service/client shared memory buffer code to GpuMemoryBufferSupport

content/common/gpu/gpu_memory_buffer_factory_io_surface.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_IO_SURFACE_H_
 #define CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_IO_SURFACE_H_
 
 #include <utility>
 
 #include <IOSurface/IOSurface.h>
@@ skipping 16 matching lines @@
 
 namespace content {
 
 class CONTENT_EXPORT GpuMemoryBufferFactoryIOSurface
     : public GpuMemoryBufferFactory,
       public gpu::ImageFactory {
  public:
   GpuMemoryBufferFactoryIOSurface();
   ~GpuMemoryBufferFactoryIOSurface() override;
 
-  static bool IsGpuMemoryBufferConfigurationSupported(gfx::BufferFormat format,
-                                                      gfx::BufferUsage usage);
-
   // Overridden from GpuMemoryBufferFactory:
   gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
       gfx::GpuMemoryBufferId id,
       const gfx::Size& size,
       gfx::BufferFormat format,
       gfx::BufferUsage usage,
       int client_id,
       gpu::SurfaceHandle surface_handle) override;
   gfx::GpuMemoryBufferHandle CreateGpuMemoryBufferFromHandle(
       const gfx::GpuMemoryBufferHandle& handle,
@@ skipping 21 matching lines @@
   // used with any GPU process by passing a mach_port to CreateImageCHROMIUM.
   IOSurfaceMap io_surfaces_;
   base::Lock io_surfaces_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferFactoryIOSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_IO_SURFACE_H_