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

third_party/WebKit/Source/platform/fonts/Font.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (c) 2007, 2008, 2010 Google 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
@@ skipping 29 matching lines @@
 #include "platform/text/BidiResolver.h"
 #include "platform/text/Character.h"
 #include "platform/text/TextRun.h"
 #include "platform/text/TextRunIterator.h"
 #include "platform/transforms/AffineTransform.h"
 #include "platform/wtf/StdLibExtras.h"
 #include "platform/wtf/text/CharacterNames.h"
 #include "platform/wtf/text/Unicode.h"
 #include "third_party/skia/include/core/SkTextBlob.h"
 
-using namespace WTF;
-using namespace Unicode;
-
 namespace blink {
 
 Font::Font() : can_shape_word_by_word_(0), shape_word_by_word_computed_(0) {}
 
 Font::Font(const FontDescription& fd)
     : font_description_(fd),
       can_shape_word_by_word_(0),
       shape_word_by_word_computed_(0) {}
 
 Font::Font(const Font& other)
@@ skipping 356 matching lines @@
 
 bool Font::LoadingCustomFonts() const {
   return font_fallback_list_ && font_fallback_list_->LoadingCustomFonts();
 }
 
 bool Font::IsFallbackValid() const {
   return !font_fallback_list_ || font_fallback_list_->IsValid();
 }
 
 }  // namespace blink