Revert of Chromium plumbing for Screen Orientation API orientationchange events.

content/public/test/mock_render_thread.h

Index: content/public/test/mock_render_thread.h
diff --git a/content/public/test/mock_render_thread.h b/content/public/test/mock_render_thread.h
index 05c1f5420e6f208b88eedd47d1f2244c575008b3..d763b26e260ac07cd3d76a6475dc0f8bdfbcc48e 100644
--- a/content/public/test/mock_render_thread.h
+++ b/content/public/test/mock_render_thread.h
@@ -102,17 +102,13 @@
   // state.
   void SendCloseMessage();
 
-  // Dispatches control messages to observers.
-  bool OnControlMessageReceived(const IPC::Message& msg);
-
-  ObserverList<RenderProcessObserver>& observers() {
-    return observers_;
-  }
-
  protected:
   // This function operates as a regular IPC listener. Subclasses
   // overriding this should first delegate to this implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
+
+  // Dispatches control messages to observers.
+  bool OnControlMessageReceived(const IPC::Message& msg);
 
   // The Widget expects to be returned valid route_id.
   void OnCreateWidget(int opener_id,