Clean up mac gpu switching code a little.

content/browser/gpu/gpu_data_manager_impl_private.h

 // Copyright (c) 2013 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_BROWSER_GPU_GPU_DATA_MANAGER_IMPL_PRIVATE_H_
 #define CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_IMPL_PRIVATE_H_
 
 #include <list>
 #include <map>
 #include <set>
@@ skipping 89 matching lines @@
   void Notify3DAPIBlocked(const GURL& url,
                           int render_process_id,
                           int render_view_id,
                           ThreeDAPIType requester);
 
   size_t GetBlacklistedFeatureCount() const;
 
   void SetDisplayCount(unsigned int display_count);
   unsigned int GetDisplayCount() const;
 
+  bool UpdateActiveGpu(uint32 vendor_id, uint32 device_id);
+
   void OnGpuProcessInitFailure();
 
   virtual ~GpuDataManagerImplPrivate();
 
  private:
   friend class GpuDataManagerImplPrivateTest;
 
   FRIEND_TEST_ALL_PREFIXES(GpuDataManagerImplPrivateTest,
                            GpuSideBlacklisting);
   FRIEND_TEST_ALL_PREFIXES(GpuDataManagerImplPrivateTest,
@@ skipping 137 matching lines @@
   // True if all future Initialize calls should be ignored.
   bool finalized_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuDataManagerImplPrivate);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GPU_GPU_DATA_MANAGER_IMPL_PRIVATE_H_