Improve the handling of mock screen orientation for layout tests.

content/renderer/renderer_webkitplatformsupport_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
@@ skipping 159 matching lines @@
   // a listener has been set via setGamepadListener.
   static void MockGamepadDisconnected(int index, const blink::WebGamepad& pad);
 
   // Set WebDeviceMotionData to return when setDeviceMotionListener is invoked.
   static void SetMockDeviceMotionDataForTesting(
       const blink::WebDeviceMotionData& data);
   // Set WebDeviceOrientationData to return when setDeviceOrientationListener
   // is invoked.
   static void SetMockDeviceOrientationDataForTesting(
       const blink::WebDeviceOrientationData& data);
-  // Set WebScreenOrientation to return when setScreenOrientationListener is
-  // invoked.
+  // Forces the screen orientation for testing purposes.
   static void SetMockScreenOrientationForTesting(
       blink::WebScreenOrientationType);
 
   WebDatabaseObserverImpl* web_database_observer_impl() {
     return web_database_observer_impl_.get();
   }
 
  private:
   bool CheckPreparsedJsCachingEnabled() const;
 
@@ skipping 39 matching lines @@
   scoped_ptr<ScreenOrientationDispatcher> screen_orientation_dispatcher_;
 
   scoped_ptr<blink::WebScrollbarBehavior> web_scrollbar_behavior_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererWebKitPlatformSupportImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_WEBKITPLATFORMSUPPORT_IMPL_H_