Forward mouse down node information to WebWidgetClient

Source/core/page/ChromeClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple, Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 221 matching lines @@
     // Input mehtod editor related functions.
     virtual void didCancelCompositionOnSelectionChange() { }
     virtual void willSetInputMethodState() { }
     virtual void didUpdateTextOfFocusedElementByNonUserInput() { }
     virtual void showImeIfNeeded() { }
 
     virtual void registerViewportLayers() const { }
 
     virtual void showUnhandledTapUIIfNeeded(IntPoint, Node*, bool) { }
 
+    virtual void onMouseDown(Node*) { }
+
     virtual void didUpdateTopControls() const { }
 
     virtual void registerPopupOpeningObserver(PopupOpeningObserver*) = 0;
     virtual void unregisterPopupOpeningObserver(PopupOpeningObserver*) = 0;
 
 protected:
     virtual ~ChromeClient() { }
 
     virtual void showMouseOverURL(const HitTestResult&) = 0;
     virtual void setWindowRect(const IntRect&) = 0;
     virtual bool openBeforeUnloadConfirmPanelDelegate(LocalFrame*, const String& message) = 0;
     virtual bool openJavaScriptAlertDelegate(LocalFrame*, const String&) = 0;
     virtual bool openJavaScriptConfirmDelegate(LocalFrame*, const String&) = 0;
     virtual bool openJavaScriptPromptDelegate(LocalFrame*, const String& message, const String& defaultValue, String& result) = 0;
     virtual void printDelegate(LocalFrame*) = 0;
 
 private:
     bool canOpenModalIfDuringPageDismissal(Frame* mainFrame, DialogType, const String& message);
     void setToolTip(const HitTestResult&);
 };
 
 } // namespace blink
 
 #endif // ChromeClient_h