Properly route screen orientation IPC messages.

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 cd7ec890fdd2e2490ac686918a6a51b0e3727693..32e342dcdbdc80fe0f9859948cc5dcfe8ca29772 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -56,7 +56,6 @@ class RenderWidgetHelper;
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 class RenderWidgetHostViewFrameSubscriber;
-class ScreenOrientationDispatcherHost;
 class StoragePartition;
 class StoragePartitionImpl;
 
@@ -181,9 +180,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
   void WebRtcLogMessage(const std::string& message);
 #endif
 
-  scoped_refptr<ScreenOrientationDispatcherHost>
-      screen_orientation_dispatcher_host() const;
-
   // Used to extend the lifetime of the sessions until the render view
   // in the renderer is fully closed. This is static because its also called
   // with mock hosts as input in test cases.
@@ -451,9 +447,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
   WebRtcStopRtpDumpCallback stop_rtp_dump_callback_;
 #endif
 
-  // Message filter and dispatcher for screen orientation.
-  ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host_;
-
   int worker_ref_count_;
 
   // Records the time when the process starts surviving for workers for UMA.