Support dynamic switching between integrated and discrete GPUs on Mac OS X.

content/plugin/webplugin_accelerated_surface_proxy_mac.h

Index: content/plugin/webplugin_accelerated_surface_proxy_mac.h
===================================================================
--- content/plugin/webplugin_accelerated_surface_proxy_mac.h	(revision 105158)
+++ content/plugin/webplugin_accelerated_surface_proxy_mac.h	(working copy)
@@ -6,6 +6,7 @@
 #define CONTENT_PLUGIN_WEBPLUGIN_ACCELERATED_SURFACE_PROXY_H_
 #pragma once
 
+#include "ui/gfx/gl/gpu_preference.h"
 #include "webkit/plugins/npapi/webplugin_accelerated_surface_mac.h"
 
 class WebPluginProxy;
@@ -18,7 +19,8 @@
  public:
   // Creates a new WebPluginAcceleratedSurfaceProxy that uses plugin_proxy
   // to proxy calls. plugin_proxy must outlive this object.
-  WebPluginAcceleratedSurfaceProxy(WebPluginProxy* plugin_proxy);
+  WebPluginAcceleratedSurfaceProxy(WebPluginProxy* plugin_proxy,
+                                   gfx::GpuPreference gpu_preference);
   virtual ~WebPluginAcceleratedSurfaceProxy();
 
   // WebPluginAcceleratedSurface implementation.