Updated OSX to blacklist multisampling when multiple monitors are connected

content/browser/renderer_host/render_process_host_impl.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_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_
 
 #include <map>
 #include <queue>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/process.h"
 #include "base/synchronization/waitable_event.h"
 #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"
 
 class CommandLine;
 struct ViewHostMsg_CompositorSurfaceBuffersSwapped_Params;
 
 namespace base {
 class MessageLoop;
 }
@@ skipping 27 matching lines @@
 // keeps a list of RenderView (renderer) and WebContentsImpl (browser) which
 // are correlated with IDs. This way, the Views and the corresponding ViewHosts
 // communicate through the two process objects.
 //
 // A RenderProcessHost is also associated with one and only one
 // StoragePartition.  This allows us to implement strong storage isolation
 // because all the IPCs from the RenderViews (renderer) will only ever be able
 // 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,
                         bool supports_browser_plugin,
                         bool is_guest);
   virtual ~RenderProcessHostImpl();
 
   // RenderProcessHost implementation (public portion).
   virtual void EnableSendQueue() OVERRIDE;
   virtual bool Init() OVERRIDE;
@@ skipping 152 matching lines @@
   // copied over.
   void PropagateBrowserCommandLineToRenderer(const CommandLine& browser_cmd,
                                              CommandLine* renderer_cmd) const;
 
   // Callers can reduce the RenderProcess' priority.
   void SetBackgrounded(bool backgrounded);
 
   // 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.
   int32 visible_widgets_;
 
   // Does this process have backgrounded priority.
   bool backgrounded_;
 
   // Used to allow a RenderWidgetHost to intercept various messages on the
   // IO thread.
@@ skipping 72 matching lines @@
   bool supports_browser_plugin_;
 
   // Indicates whether this is a RenderProcessHost of a Browser Plugin guest
   // renderer.
   bool is_guest_;
 
   // Forwards messages between WebRTCInternals in the browser process
   // and PeerConnectionTracker in the renderer process.
   scoped_refptr<PeerConnectionTrackerHost> peer_connection_tracker_host_;
 
+  // Prevents the class from being added as a GpuDataManagerImpl observer more
+  // than once.
+  bool gpu_observer_registered_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_BROWSER_RENDER_PROCESS_HOST_IMPL_H_