Move ReadFileToString to the base namespace.

chrome/browser/chromeos/drive/sync_client_unittest.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/chromeos/drive/sync_client.h"
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 268 matching lines @@
   // IDs of pinned files, with stale local cache files.
   sync_client_->StartCheckingExistingPinnedFiles();
   base::RunLoop().RunUntilIdle();
 
   // "fetched" and "dirty" are the existing pinned files.
   // The non-dirty one should be synced, but the dirty one should not.
   base::FilePath cache_file;
   std::string content;
   EXPECT_EQ(FILE_ERROR_OK, cache_->GetFile(resource_ids_["fetched"],
                                            &cache_file));
-  EXPECT_TRUE(file_util::ReadFileToString(cache_file, &content));
+  EXPECT_TRUE(base::ReadFileToString(cache_file, &content));
   EXPECT_EQ(kRemoteContent, content);
   content.clear();
 
   EXPECT_EQ(FILE_ERROR_OK, cache_->GetFile(resource_ids_["dirty"],
                                            &cache_file));
-  EXPECT_TRUE(file_util::ReadFileToString(cache_file, &content));
+  EXPECT_TRUE(base::ReadFileToString(cache_file, &content));
   EXPECT_EQ(kLocalContent, content);
 }
 
 TEST_F(SyncClientTest, RetryOnDisconnection) {
   // Let the service go down.
   drive_service_->set_offline(true);
   // Change the network connection state after some delay, to test that
   // FILE_ERROR_NO_CONNECTION is handled by SyncClient correctly.
   // Without this delay, JobScheduler will keep the jobs unrun and SyncClient
   // will receive no error.
@@ skipping 24 matching lines @@
 
   // Fetched and uploaded.
   EXPECT_TRUE(cache_->GetCacheEntry(resource_ids_["foo"], &cache_entry));
   EXPECT_TRUE(cache_entry.is_present());
   EXPECT_TRUE(cache_->GetCacheEntry(resource_ids_["dirty"], &cache_entry));
   EXPECT_FALSE(cache_entry.is_dirty());
 }
 
 }  // namespace internal
 }  // namespace drive