Remove unused "using" statements in WebKit/Source/platform.

third_party/WebKit/Source/platform/text/TextBreakIteratorICU.cpp

 /*
  * Copyright (C) 2006 Lars Knoll <lars@trolltech.com>
  * Copyright (C) 2007, 2011, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 14 matching lines @@
 #include <unicode/ubrk.h>
 #include <memory>
 #include "platform/text/TextBreakIteratorInternalICU.h"
 #include "platform/wtf/Assertions.h"
 #include "platform/wtf/HashMap.h"
 #include "platform/wtf/PtrUtil.h"
 #include "platform/wtf/ThreadSpecific.h"
 #include "platform/wtf/ThreadingPrimitives.h"
 #include "platform/wtf/text/WTFString.h"
 
-using namespace WTF;
-
 namespace blink {
 
 class LineBreakIteratorPool final {
   USING_FAST_MALLOC(LineBreakIteratorPool);
   WTF_MAKE_NONCOPYABLE(LineBreakIteratorPool);
 
  public:
   static LineBreakIteratorPool& SharedPool() {
     static WTF::ThreadSpecific<LineBreakIteratorPool>* pool =
         new WTF::ThreadSpecific<LineBreakIteratorPool>;
@@ skipping 893 matching lines @@
       "$Tel1 $TelV $Tel0;"  // Telugu Virama (backward)
       "$Kan1 $KanV $Kan0;"  // Kannada Virama (backward)
       "$Mal1 $MalV $Mal0;"  // Malayalam Virama (backward)
       "!!safe_reverse;"
       "!!safe_forward;";
 
   return SetUpIteratorWithRules(kRules, string, length);
 }
 
 }  // namespace blink