Fix for mouse capture and release on ClearButtonElement

Source/core/html/shadow/ClearButtonElement.cpp

 /*
  * Copyright (C) 2013 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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 88 matching lines @@
         if (m_capturing) {
             if (LocalFrame* frame = document().frame()) {
                 frame->eventHandler().setCapturingMouseEventsNode(nullptr);
                 m_capturing = false;
             }
             if (hovered()) {
                 m_clearButtonOwner->clearValue();
                 event->setDefaultHandled();
             }
         }
+    } else if (event->type() == EventTypeNames::mousemove) {

[Habib Virji, 2014/09/23 11:09:06]

As suggested by tkent. Please use click instead of mouse events.

Also add tests for your changes.

+        if (m_capturing) {
+            if (LocalFrame* frame = document().frame()) {
+                frame->eventHandler().setCapturingMouseEventsNode(nullptr);
+                m_capturing = false;
+            }
+        }
+        event->setDefaultHandled();
     }
 
     if (!event->defaultHandled())
         HTMLDivElement::defaultEventHandler(event);
 }
 
 bool ClearButtonElement::isClearButtonElement() const
 {
     return true;
 }
 
 void ClearButtonElement::trace(Visitor* visitor)
 {
     visitor->trace(m_clearButtonOwner);
     HTMLDivElement::trace(visitor);
 }
 
 }