Updated OSX to blacklist multisampling when multiple monitors are connected

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 773ebc571792c40d6fdc909710c055e569ec4c4e..0fa1167f1cee8c373ee960ea887630105cb2a798 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -237,6 +237,8 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // Handle termination of our process.
   void ProcessDied(bool already_dead);
 
+  void OnGpuSwitch();
+
   // The count of currently visible widgets.  Since the host can be a container
   // for multiple widgets, it uses this count to determine when it should be
   // backgrounded.
@@ -329,6 +331,8 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // and PeerConnectionTracker in the renderer process.
   scoped_refptr<PeerConnectionTrackerHost> peer_connection_tracker_host_;
 
+  base::Callback<void()> gpu_switch_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 };