Revert of Removing "using" declarations that import names in the C++ Standard library.

Source/core/fileapi/FileReaderLoader.cpp

 /*
  * Copyright (C) 2010 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 32 matching lines @@
 #include "platform/blob/BlobURL.h"
 #include "platform/network/ResourceRequest.h"
 #include "platform/network/ResourceResponse.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/Base64.h"
 #include "wtf/text/StringBuilder.h"
 
+using namespace std;
+
 namespace WebCore {
 
 FileReaderLoader::FileReaderLoader(ReadType readType, FileReaderLoaderClient* client)
     : m_readType(readType)
     , m_client(client)
     , m_urlForReadingIsStream(false)
     , m_isRawDataConverted(false)
     , m_stringResult("")
     , m_finishedLoading(false)
     , m_bytesLoaded(0)
@@ skipping 127 matching lines @@
         // default size.
         m_totalBytes = -1;
     }
 
     ASSERT(!m_rawData);
 
     if (m_readType != ReadByClient) {
         // Check that we can cast to unsigned since we have to do
         // so to call ArrayBuffer's create function.
         // FIXME: Support reading more than the current size limit of ArrayBuffer.
-        if (initialBufferLength > std::numeric_limits<unsigned>::max()) {
+        if (initialBufferLength > numeric_limits<unsigned>::max()) {
             failed(FileError::NOT_READABLE_ERR);
             return;
         }
 
         if (initialBufferLength < 0)
             m_rawData = adoptPtr(new ArrayBufferBuilder());
         else
             m_rawData = adoptPtr(new ArrayBufferBuilder(static_cast<unsigned>(initialBufferLength)));
 
         if (!m_rawData || !m_rawData->isValid()) {
@@ skipping 184 matching lines @@
     m_stringResult = builder.toString();
 }
 
 void FileReaderLoader::setEncoding(const String& encoding)
 {
     if (!encoding.isEmpty())
         m_encoding = WTF::TextEncoding(encoding);
 }
 
 } // namespace WebCore