Move ReadFileToString to the base namespace.

chrome/browser/extensions/extension_creator.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 "chrome/browser/extensions/extension_creator.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 109 matching lines @@
 
 crypto::RSAPrivateKey* ExtensionCreator::ReadInputKey(const base::FilePath&
     private_key_path) {
   if (!base::PathExists(private_key_path)) {
     error_message_ =
         l10n_util::GetStringUTF8(IDS_EXTENSION_PRIVATE_KEY_NO_EXISTS);
     return NULL;
   }
 
   std::string private_key_contents;
-  if (!file_util::ReadFileToString(private_key_path,
-      &private_key_contents)) {
+  if (!base::ReadFileToString(private_key_path, &private_key_contents)) {
     error_message_ =
         l10n_util::GetStringUTF8(IDS_EXTENSION_PRIVATE_KEY_FAILED_TO_READ);
     return NULL;
   }
 
   std::string private_key_bytes;
   if (!Extension::ParsePEMKeyBytes(private_key_contents,
        &private_key_bytes)) {
     error_message_ =
         l10n_util::GetStringUTF8(IDS_EXTENSION_PRIVATE_KEY_INVALID);
@@ skipping 182 matching lines @@
       SignZip(zip_path, key_pair.get(), &signature) &&
       WriteCRX(zip_path, key_pair.get(), signature, crx_path)) {
     result = true;
   }
 
   base::DeleteFile(zip_path, false);
   return result;
 }
 
 }  // namespace extensions