Adding a mutator method for the private variables.

chrome/gpu/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_GPU_GPU_INFO_H__
 #define CHROME_GPU_GPU_INFO_H__
 
 // Provides access to the GPU information for the system
 // on which chrome is currently running.
 
@@ skipping 26 matching lines @@
 
   // 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;
 
   // Populate variables with necessary graphics card information.
   // Returns true on success.
   bool CollectGraphicsInfo();
 
+  // 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);
+
 #if defined(OS_WIN)
   // Windows provides two ways of doing graphics so we need two ways of
   // collecting info based on what's on a user's machine.
   // The selection between the two methods is done in the cc file.
 
   // A D3D argument is passed in for testing purposes
   bool CollectGraphicsInfoD3D(IDirect3D9* d3d);
 
   // The GL version of collecting information
   bool CollectGraphicsInfoGL();
 #endif
 
  private:
   uint32 vendor_id_;
   uint32 device_id_;
   std::wstring driver_version_;
   uint32 pixel_shader_version_;
   uint32 vertex_shader_version_;
 };
 
 #endif  // CHROME_GPU_GPU_INFO_H__