Fix screen.orientation.lock() rejection and an integration test.

content/browser/screen_orientation/screen_orientation_dispatcher_host.h

Index: content/browser/screen_orientation/screen_orientation_dispatcher_host.h
diff --git a/content/browser/screen_orientation/screen_orientation_dispatcher_host.h b/content/browser/screen_orientation/screen_orientation_dispatcher_host.h
index 61d1938d6717d704ea2f9a3e57bb13aaccb053b5..3357b17ae04ca1921b7c7455499e28db02c092f2 100644
--- a/content/browser/screen_orientation/screen_orientation_dispatcher_host.h
+++ b/content/browser/screen_orientation/screen_orientation_dispatcher_host.h
@@ -31,7 +31,14 @@ class CONTENT_EXPORT ScreenOrientationDispatcherHost
   virtual bool OnMessageReceived(const IPC::Message&,
                                  RenderFrameHost* render_frame_host) OVERRIDE;
 
+  // Notifies that the lock with the given |request_id| has succeeded.
+  // The renderer process will be notified that the lock succeeded only if
+  // |request_id| matches the |current_lock_|.
   void NotifyLockSuccess(int request_id);
+
+  // Notifies that the lock with the given |request_id| has failed.
+  // The renderer process will be notified that the lock succeeded only if
+  // |request_id| matches the |current_lock_|.
   void NotifyLockError(int request_id, blink::WebLockOrientationError error);
 
   void OnOrientationChange();
@@ -47,6 +54,9 @@ class CONTENT_EXPORT ScreenOrientationDispatcherHost
   RenderFrameHost* GetRenderFrameHostForRequestID(int request_id);
 
   void ResetCurrentLock();
+  void NotifyLockError(int request_id,
+                       RenderFrameHost* render_frame_host,
+                       blink::WebLockOrientationError error);
 
   scoped_ptr<ScreenOrientationProvider> provider_;