Add Mac GPU logging code.

chrome/common/gpu_info.h

 // Copyright (c) 2006-2010 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 CHROME_COMMON_GPU_INFO_H__
 #define CHROME_COMMON_GPU_INFO_H__
 #pragma once
 
 // Provides access to the GPU information for the system
 // on which chrome is currently running.
@@ skipping 21 matching lines @@
   // Return the version of the pixel/fragment shader used by the gpu.
   // This will typically be a number less than 10 so storing as a float
   // should be okay.
   uint32 pixel_shader_version() const;
 
   // Return the version of the vertex shader used by the gpu.
   // This will typically be a number less than 10 so storing as a float
   // should be okay.
   uint32 vertex_shader_version() const;
 
+  // Return the version of OpenGL we are using.
+  // Major version in the high word, minor in the low word, eg version 2.5
+  // would be 0x00020005.
+  // Returns 0 if we're not using OpenGL, say because we're going through
+  // D3D instead.
+  uint32 gl_version() const;
+
   // Populate variables with passed in values
   void SetGraphicsInfo(uint32 vendor_id, uint32 device_id,
                        const std::wstring& driver_version,
                        uint32 pixel_shader_version,
-                       uint32 vertex_shader_version);
+                       uint32 vertex_shader_version,
+                       uint32 gl_version);
  private:
   uint32 vendor_id_;
   uint32 device_id_;
   std::wstring driver_version_;
   uint32 pixel_shader_version_;
   uint32 vertex_shader_version_;
+  uint32 gl_version_;
 };
 
 #endif  // CHROME_COMMON_GPU_INFO_H__