Move ReadFileToString to the base namespace.

remoting/host/json_host_config.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/host/json_host_config.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/important_file_writer.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/location.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 
 namespace remoting {
 
 JsonHostConfig::JsonHostConfig(const base::FilePath& filename)
     : filename_(filename) {
 }
 
 JsonHostConfig::~JsonHostConfig() {}
 
 bool JsonHostConfig::Read() {
   DCHECK(CalledOnValidThread());
 
   // TODO(sergeyu): Implement better error handling here.
   std::string file_content;
-  if (!file_util::ReadFileToString(filename_, &file_content)) {
+  if (!base::ReadFileToString(filename_, &file_content)) {
     LOG(WARNING) << "Failed to read " << filename_.value();
     return false;
   }
 
   return SetSerializedData(file_content);
 }
 
 bool JsonHostConfig::Save() {
   DCHECK(CalledOnValidThread());
 
@@ skipping 14 matching lines @@
     LOG(WARNING) << "Failed to parse " << filename_.value();
     return false;
   }
 
   DictionaryValue* dictionary = static_cast<DictionaryValue*>(value.release());
   values_.reset(dictionary);
   return true;
 }
 
 }  // namespace remoting