Revert 130496 - Disable image transport surface on AMD GPUs

content/public/common/gpu_info.h

 // Copyright (c) 2012 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_PUBLIC_COMMON_GPU_INFO_H_
 #define CONTENT_PUBLIC_COMMON_GPU_INFO_H_
 #pragma once
 
 // Provides access to the GPU information for the system
 // on which chrome is currently running.
@@ skipping 16 matching lines @@
   // Whether more GPUInfo fields might be collected in the future.
   bool finalized;
 
   // The amount of time taken to get from the process starting to the message
   // loop being pumped.
   base::TimeDelta initialization_time;
 
   // Computer has NVIDIA Optimus
   bool optimus;
 
-  // Computer has AMD Dynamic Switchable Graphics
-  bool amd_switchable;
-
   // The DWORD (uint32) representing the graphics card vendor id.
   uint32 vendor_id;
 
   // The DWORD (uint32) representing the graphics card device id.  Device ids
   // are unique to vendor, not to one another.
   uint32 device_id;
 
   // The vendor of the graphics driver currently installed.
   std::string driver_vendor;
 
@@ skipping 34 matching lines @@
 
 #if defined(OS_WIN)
   // The information returned by the DirectX Diagnostics Tool.
   DxDiagNode dx_diagnostics;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_GPU_INFO_H_