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..83b9eea0eecddd613d1d8b6390055356adab7592 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -15,6 +15,7 @@
 #include "base/timer.h"
 #include "content/browser/child_process_launcher.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/gpu_data_manager_observer.h"
 #include "content/public/browser/render_process_host.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ui/surface/transport_dib.h"
@@ -61,7 +62,8 @@ class StoragePartitionImpl;
 // to access the partition they are assigned to.
 class CONTENT_EXPORT RenderProcessHostImpl
     : public RenderProcessHost,
-      public ChildProcessLauncher::Client {
+      public ChildProcessLauncher::Client,
+      public GpuDataManagerObserver {
  public:
   RenderProcessHostImpl(BrowserContext* browser_context,
                         StoragePartitionImpl* storage_partition_impl,
@@ -237,6 +239,8 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // Handle termination of our process.
   void ProcessDied(bool already_dead);
 
+  virtual void OnGpuSwitching() OVERRIDE;
+
   // 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.