Fix server-side image map click location with "Open link in new tab"

third_party/WebKit/Source/core/html/HTMLAnchorElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 89 matching lines @@
     ASSERT(document().isActive());
 
     if (isFocusable() && Element::supportsFocus())
         return HTMLElement::isKeyboardFocusable();
 
     if (isLink() && !document().frameHost()->chromeClient().tabsToLinks())
         return false;
     return HTMLElement::isKeyboardFocusable();
 }
 
-static void appendServerMapMousePosition(StringBuilder& url, Event* event)
+void HTMLAnchorElement::appendServerMapMousePosition(StringBuilder& url, Event* event)

[tkent, 2016/02/05 02:05:47]

The |event| argument should be |const Event*| or |const Event&|.

[JakeYoon, 2016/02/05 04:04:49]

Could you explain to me the reason that argument should be |const Event*| or
|const Event&|? 

In fact, I don't know difference argument |const *| and |*|

[tkent, 2016/02/05 06:00:45]

It ensures the Event object is not modified in the function.

[JakeYoon, 2016/02/05 07:28:34]

Okay I change params type, |*| to |const *|

 {
     if (!event->isMouseEvent())
         return;
 
     ASSERT(event->target());
     Node* target = event->target()->toNode();
     ASSERT(target);
     if (!isHTMLImageElement(*target))
         return;
 
@@ skipping 262 matching lines @@
 }
 
 Node::InsertionNotificationRequest HTMLAnchorElement::insertedInto(ContainerNode* insertionPoint)
 {
     InsertionNotificationRequest request = HTMLElement::insertedInto(insertionPoint);
     logAddElementIfIsolatedWorldAndInDocument("a", hrefAttr);
     return request;
 }
 
 } // namespace blink