Add capability for GPU blacklist to manage GPU switching.

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 <string>
 
 #include "content/common/content_export.h"
@@ skipping 24 matching lines @@
   // The same as above, except that the GPUInfo is provided.
   // For testing only.
   virtual void Initialize(const std::string& browser_version_string,
                           const std::string& gpu_blacklist_json,
                           const content::GPUInfo& gpu_info) = 0;
 
   virtual std::string GetBlacklistVersion() const = 0;
 
   virtual GpuFeatureType GetBlacklistedFeatures() const = 0;
 
+  virtual GpuSwitchingOption GetGpuSwitchingOption() const = 0;
+
   // Returns the reasons for the latest run of blacklisting decisions.
   // For the structure of returned value, see documentation for
   // GpuBlacklist::GetBlacklistedReasons().
   // Caller is responsible to release the returned value.
   virtual base::ListValue* GetBlacklistReasons() const = 0;
 
   virtual GPUInfo GetGPUInfo() const = 0;
 
   // This indicator might change because we could collect more GPU info or
   // because the GPU blacklist could be updated.
@@ skipping 29 matching lines @@
   virtual void AddObserver(GpuDataManagerObserver* observer) = 0;
   virtual void RemoveObserver(GpuDataManagerObserver* observer) = 0;
 
  protected:
   virtual ~GpuDataManager() {}
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_