Add initial Blink-side support for the Screen Orientation API

Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 71 matching lines @@
 namespace blink {
 class AutocompletePopupMenuClient;
 class ContextFeaturesClientImpl;
 class ContextMenuClientImpl;
 class GeolocationClientProxy;
 class LinkHighlight;
 class MIDIClientProxy;
 class PinchViewports;
 class PopupContainer;
 class PrerendererClientImpl;
+class ScreenOrientationClientProxy;
 class SpeechInputClientImpl;
 class SpeechRecognitionClientProxy;
 class UserMediaClientImpl;
 class ValidationMessageClientImpl;
 class WebAXObject;
 class WebActiveGestureAnimation;
 class WebDevToolsAgentClient;
 class WebDevToolsAgentPrivate;
 class WebDocument;
 class WebFrameImpl;
@@ skipping 650 matching lines @@
     bool m_recreatingGraphicsContext;
     static const WebInputEvent* m_currentInputEvent;
     OwnPtr<PinchViewports> m_pinchViewports;
 
 #if ENABLE(INPUT_SPEECH)
     OwnPtr<SpeechInputClientImpl> m_speechInputClient;
 #endif
     OwnPtr<SpeechRecognitionClientProxy> m_speechRecognitionClient;
 
     OwnPtr<GeolocationClientProxy> m_geolocationClientProxy;
+    OwnPtr<ScreenOrientationClientProxy> m_screenOrientationClientProxy;
 
     UserMediaClientImpl m_userMediaClientImpl;
     OwnPtr<MIDIClientProxy> m_midiClientProxy;
     OwnPtr<NavigatorContentUtilsClientImpl> m_navigatorContentUtilsClient;
     OwnPtr<WebActiveGestureAnimation> m_gestureAnimation;
     WebPoint m_positionOnFlingStart;
     WebPoint m_globalPositionOnFlingStart;
     int m_flingModifier;
     bool m_flingSourceDevice;
     Vector<OwnPtr<LinkHighlight> > m_linkHighlights;
@@ skipping 13 matching lines @@
     Vector<WebHelperPluginImpl*> m_helperPluginsPendingClose;
 };
 
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 } // namespace blink
 
 #endif