Move ReadFileToString to the base namespace.

cloud_print/gcp20/prototype/printer_state.cc

 // Copyright 2013 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 "cloud_print/gcp20/prototype/printer_state.h"
 
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 57 matching lines @@
   std::string json_str;
   base::JSONWriter::WriteWithOptions(&json,
                                      base::JSONWriter::OPTIONS_PRETTY_PRINT,
                                      &json_str);
   return !!file_util::WriteFile(path, json_str.data(),
                                 static_cast<int>(json_str.size()));
 }
 
 bool LoadFromFile(const base::FilePath& path, PrinterState* state) {
   std::string json_str;
-  if (!file_util::ReadFileToString(path, &json_str)) {
+  if (!base::ReadFileToString(path, &json_str)) {
     LOG(ERROR) << "Cannot open file.";
     return false;
   }
 
   scoped_ptr<base::Value> json_val(base::JSONReader::Read(json_str));
   base::DictionaryValue* json = NULL;
   if (!json_val || !json_val->GetAsDictionary(&json)) {
     LOG(ERROR) << "Cannot read JSON dictionary from file.";
     return false;
   }
@@ skipping 68 matching lines @@
   state->refresh_token = refresh_token;
   state->xmpp_jid = xmpp_jid;
   state->access_token = access_token;
   state->access_token_update = base::Time::FromTimeT(access_token_update);
   state->local_settings = local_settings;
   return true;
 }
 
 }  // namespace printer_state