Use C++11 range-based loop for core/clipboard, core/dom and core/testing

Source/core/dom/Fullscreen.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
@@ skipping 321 matching lines @@
     for (Frame* descendant = document()->frame() ? document()->frame()->tree().traverseNext() : 0; descendant; descendant = descendant->tree().traverseNext()) {
         if (!descendant->isLocalFrame())
             continue;
         ASSERT(toLocalFrame(descendant)->document());
         if (fullscreenElementFrom(*toLocalFrame(descendant)->document()))
             descendants.prepend(toLocalFrame(descendant)->document());
     }
 
     // 4. For each descendant in descendants, empty descendant's fullscreen element stack, and queue a
     // task to fire an event named fullscreenchange with its bubbles attribute set to true on descendant.
-    for (WillBeHeapDeque<RefPtrWillBeMember<Document> >::iterator i = descendants.begin(); i != descendants.end(); ++i) {
-        ASSERT(*i);
-        RequestType requestType = from(**i).m_fullScreenElementStack.last().second;
-        from(**i).clearFullscreenElementStack();
-        enqueueChangeEvent(**i, requestType);
+    for (auto descendant : descendants) {

[dcheng, 2014/12/16 19:52:51]

Doesn't this end up ref and unref'ing everything in the container, since the
deque holds a RefPtr<>?

+        ASSERT(descendant);
+        RequestType requestType = from(*descendant).m_fullScreenElementStack.last().second;
+        from(*descendant).clearFullscreenElementStack();
+        enqueueChangeEvent(*descendant, requestType);
     }
 
     // 5. While doc is not null, run these substeps:
     Element* newTop = 0;
     while (currentDoc) {
         RequestType requestType = from(*currentDoc).m_fullScreenElementStack.last().second;
 
         // 1. Pop the top element of doc's fullscreen element stack.
         from(*currentDoc).popFullscreenElementStack();
 
@@ skipping 247 matching lines @@
 void Fullscreen::trace(Visitor* visitor)
 {
     visitor->trace(m_fullScreenElement);
     visitor->trace(m_fullScreenElementStack);
     visitor->trace(m_fullScreenRenderer);
     visitor->trace(m_eventQueue);
     DocumentSupplement::trace(visitor);
 }
 
 } // namespace blink