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 onClickInput(Node*) { }

[please use gerrit instead, 2015/06/17 20:07:08]

Should this be called "onClickNode(Node*)" instead? I don't think it's
guaranteed to be an input field.

[Yufeng Shen (Slow to review), 2015/06/17 20:12:57]

oh, I think the name actually means the click is an "input event", not meaning
the Node is an "input" node. And later on we might want to 
pass more information out other than the Node*.

Does that make sense ?

[please use gerrit instead, 2015/06/17 20:58:05]

Sure.

+
     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 void 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