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

content/public/browser/gpu_data_manager.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_BROWSER_GPU_DATA_MANAGER_H_
 #define CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
 
 #include <list>
 #include <string>
 
@@ skipping 54 matching lines @@
   // Requests that the GPU process report its current video memory usage stats,
   // which can be retrieved via the GPU data manager's on-update function.
   virtual void RequestVideoMemoryUsageStatsUpdate() const = 0;
 
   // Returns true if SwiftShader should be used.
   virtual bool ShouldUseSwiftShader() const = 0;
 
   // Register a path to SwiftShader.
   virtual void RegisterSwiftShaderPath(const base::FilePath& path) = 0;
 
+  // Returns current state about WARP, which may be due to command-line
+  // arguments or saved state.
+  virtual bool ShouldUseWarp() const = 0;
+
   // Registers/unregister |observer|.
   virtual void AddObserver(GpuDataManagerObserver* observer) = 0;
   virtual void RemoveObserver(GpuDataManagerObserver* observer) = 0;
 
   // Allows a given domain previously blocked from accessing 3D APIs
   // to access them again.
   virtual void UnblockDomainFrom3DAPIs(const GURL& url) = 0;
 
   // Disable the gpu process watchdog thread.
   virtual void DisableGpuWatchdog() = 0;
@@ skipping 15 matching lines @@
   // Whether the browser compositor can be used.
   virtual bool CanUseGpuBrowserCompositor() const = 0;
 
  protected:
   virtual ~GpuDataManager() {}
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_