Create Mojo service for locking/unlocking screen orientation.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index f8f0d8bd8ceca25cccf77cee7703a6ecb4d68024..89b2b0159398361db50ffe36830e79b2c94501ca 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -61,7 +61,6 @@ class RenderViewHostDelegateView;
 class RenderViewHostImpl;
 class RenderWidgetHostImpl;
 class SavePackage;
-class ScreenOrientationDispatcherHost;
 class SiteInstance;
 class TestWebContents;
 class WebContentsDelegate;
@@ -175,10 +174,6 @@ class CONTENT_EXPORT WebContentsImpl
     return geolocation_dispatcher_host_.get();
   }
 
-  ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
-    return screen_orientation_dispatcher_host_.get();
-  }
-
   bool should_normally_be_visible() { return should_normally_be_visible_; }
 
   // Broadcasts the mode change to all frames.
@@ -391,6 +386,7 @@ class CONTENT_EXPORT WebContentsImpl
 #if defined(OS_WIN)
   virtual gfx::NativeViewAccessible GetParentNativeViewAccessible() OVERRIDE;
 #endif
+  virtual ScreenOrientationProvider* GetScreenOrientationProvider() OVERRIDE;
 
   // RenderViewHostDelegate ----------------------------------------------------
   virtual RenderViewHostDelegateView* GetDelegateView() OVERRIDE;
@@ -1227,8 +1223,7 @@ class CONTENT_EXPORT WebContentsImpl
 
   scoped_ptr<MidiDispatcherHost> midi_dispatcher_host_;
 
-  scoped_ptr<ScreenOrientationDispatcherHost>
-      screen_orientation_dispatcher_host_;
+  scoped_ptr<ScreenOrientationProvider> screen_orientation_provider_;
 
   // The accessibility mode for all frames. This is queried when each frame
   // is created, and broadcast to all frames when it changes.