Use C++11 features in core/html

Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple 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 3834 matching lines @@
     // 2. Let m have no current media controller, if it currently has one.
     setControllerInternal(nullptr);
 
     // 3. If m's mediagroup attribute is being removed, then abort these steps.
     if (group.isNull() || group.isEmpty())
         return;
 
     // 4. If there is another media element whose Document is the same as m's Document (even if one or both
     // of these elements are not actually in the Document),
     WeakMediaElementSet elements = documentToElementSetMap().get(&document());
-    for (WeakMediaElementSet::iterator i = elements.begin(); i != elements.end(); ++i) {
-        if (*i == this)
+    for (const auto& i : elements) {

[sof, 2014/10/21 09:58:43]

Let's go with a longer name -- element?

[riju_, 2014/11/04 17:50:52]

Done.

+        if (i == this)
             continue;
 
         // and which also has a mediagroup attribute, and whose mediagroup attribute has the same value as
         // the new value of m's mediagroup attribute,
-        if ((*i)->mediaGroup() == group) {
+        if (i->mediaGroup() == group) {
             //  then let controller be that media element's current media controller.
-            setControllerInternal((*i)->controller());
+            setControllerInternal(i->controller());
             return;
         }
     }
 
     // Otherwise, let controller be a newly created MediaController.
     setControllerInternal(MediaController::create(Node::executionContext()));
 }
 
 MediaController* HTMLMediaElement::controller() const
 {
@@ skipping 155 matching lines @@
 
 #if ENABLE(WEB_AUDIO)
 void HTMLMediaElement::clearWeakMembers(Visitor* visitor)
 {
     if (!visitor->isAlive(m_audioSourceNode) && audioSourceProvider())
         audioSourceProvider()->setClient(0);
 }
 #endif
 
 }