adds WARP support to Chromium, for Metro mode only, on Windows 8

chrome/browser/gpu/gpu_pref_manager.h

Index: chrome/browser/gpu/gpu_pref_manager.h
diff --git a/chrome/browser/gpu/gl_string_manager.h b/chrome/browser/gpu/gpu_pref_manager.h
similarity index 59%
rename from chrome/browser/gpu/gl_string_manager.h
rename to chrome/browser/gpu/gpu_pref_manager.h
index 655cf173c009308447568676ab3f7a06e21f93f3..c7bce9786e7fbc85fee27851865e133242444ea6 100644
--- a/chrome/browser/gpu/gl_string_manager.h
+++ b/chrome/browser/gpu/gpu_pref_manager.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_GPU_GL_STRING_MANAGER_H_
-#define CHROME_BROWSER_GPU_GL_STRING_MANAGER_H_
+#ifndef CHROME_BROWSER_GPU_GPU_PREF_MANAGER_H_
+#define CHROME_BROWSER_GPU_GPU_PREF_MANAGER_H_
 
 #include <string>
 
@@ -12,14 +12,14 @@
 
 class PrefRegistrySimple;
 
-class GLStringManager : public content::GpuDataManagerObserver {
+class GpuPrefManager : public content::GpuDataManagerObserver {
  public:
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
-  GLStringManager();
-  virtual ~GLStringManager();
+  GpuPrefManager();
+  virtual ~GpuPrefManager();
 
-  // Get cached GL strings in local state and send them to GpuDataManager.
+  // Get cached strings in local state and send them to GpuDataManager.
   void Initialize();
 
   // content::GpuDataManagerObserver
@@ -29,9 +29,10 @@ class GLStringManager : public content::GpuDataManagerObserver {
   std::string gl_vendor_;
   std::string gl_renderer_;
   std::string gl_version_;
+  bool use_warp_;
 
-  DISALLOW_COPY_AND_ASSIGN(GLStringManager);
+  DISALLOW_COPY_AND_ASSIGN(GpuPrefManager);
 };
 
-#endif  // CHROME_BROWSER_GPU_GL_STRING_MANAGER_H_
+#endif  // CHROME_BROWSER_GPU_GPU_PREF_MANAGER_H_