Revert of 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 32e342dcdbdc80fe0f9859948cc5dcfe8ca29772..cd7ec890fdd2e2490ac686918a6a51b0e3727693 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -56,6 +56,7 @@
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 class RenderWidgetHostViewFrameSubscriber;
+class ScreenOrientationDispatcherHost;
 class StoragePartition;
 class StoragePartitionImpl;
 
@@ -180,6 +181,9 @@
   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.
@@ -447,6 +451,9 @@
   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.