Drop some "using namespace" in WebKit/Source/html.

third_party/WebKit/Source/core/html/shadow/PickerIndicatorElement.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 21 matching lines @@
 
 #include "core/events/Event.h"
 #include "core/events/KeyboardEvent.h"
 #include "core/frame/Settings.h"
 #include "core/html/shadow/ShadowElementNames.h"
 #include "core/layout/LayoutDetailsMarker.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/Page.h"
 #include "platform/LayoutTestSupport.h"
 
-using namespace WTF::Unicode;
-
 namespace blink {
 
 using namespace HTMLNames;
 
 inline PickerIndicatorElement::PickerIndicatorElement(
     Document& document,
     PickerIndicatorOwner& pickerIndicatorOwner)
     : HTMLDivElement(document), m_pickerIndicatorOwner(&pickerIndicatorOwner) {}
 
 PickerIndicatorElement* PickerIndicatorElement::create(
@@ skipping 119 matching lines @@
 }
 
 DEFINE_TRACE(PickerIndicatorElement) {
   visitor->trace(m_pickerIndicatorOwner);
   visitor->trace(m_chooser);
   HTMLDivElement::trace(visitor);
   DateTimeChooserClient::trace(visitor);
 }
 
 }  // namespace blink