Cleanup namespace usage in Source/core/{dom/* & fileapi/*}

Source/core/accessibility/AXMediaControls.cpp

 /*
  * Copyright (C) 2009 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
@@ skipping 20 matching lines @@
 #include "core/accessibility/AXMediaControls.h"
 
 #include "core/html/HTMLMediaElement.h"
 #include "platform/text/PlatformLocale.h"
 
 namespace blink {
 
 using blink::WebLocalizedString;
 using namespace HTMLNames;
 
-
 static inline String queryString(WebLocalizedString::Name name)
 {
     return Locale::defaultLocale().queryString(name);
 }
 
 AccessibilityMediaControl::AccessibilityMediaControl(RenderObject* renderer)
     : AXRenderObject(renderer)
 {
 }
 
@@ skipping 238 matching lines @@
 {
     if (!m_renderer || !m_renderer->node())
         return String();
 
     MediaControlTimeDisplayElement* element = static_cast<MediaControlTimeDisplayElement*>(m_renderer->node());
     float time = element->currentValue();
     return localizedMediaTimeDescription(fabsf(time));
 }
 
 } // namespace blink