Remove unused var.

chrome/browser/chromeos/gdata/gdata_file_system_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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 1789 matching lines @@
   FilePath nonexisting_file(FILE_PATH_LITERAL("drive/Dummy file.txt"));
   FilePath file_in_root(FILE_PATH_LITERAL("drive/File 1.txt"));
   FilePath dir_in_root(FILE_PATH_LITERAL("drive/Directory 1"));
   FilePath file_in_subdir(
       FILE_PATH_LITERAL("drive/Directory 1/SubDirectory File 1.txt"));
 
   ASSERT_TRUE(EntryExists(file_in_root));
   scoped_ptr<GDataEntryProto> file_in_root_proto = GetEntryInfoByPathSync(
       file_in_root);
   ASSERT_TRUE(file_in_root_proto.get());
-  std::string file_in_root_resource_id = file_in_root_proto->resource_id();
 
   ASSERT_TRUE(EntryExists(dir_in_root));
   scoped_ptr<GDataEntryProto> dir_in_root_proto = GetEntryInfoByPathSync(
       dir_in_root);
   ASSERT_TRUE(dir_in_root_proto.get());
   ASSERT_TRUE(dir_in_root_proto->file_info().is_directory());
 
   ASSERT_TRUE(EntryExists(file_in_subdir));
   scoped_ptr<GDataEntryProto> file_in_subdir_proto = GetEntryInfoByPathSync(
       file_in_subdir);
   ASSERT_TRUE(file_in_subdir_proto.get());
-  std::string file_in_subdir_resource_id = file_in_subdir_proto->resource_id();
 
   // Once for file in root and once for file...
   EXPECT_CALL(*mock_directory_observer_, OnDirectoryChanged(
       Eq(FilePath(FILE_PATH_LITERAL("drive"))))).Times(2);
 
   // Remove first file in root.
   EXPECT_TRUE(RemoveEntry(file_in_root));
   EXPECT_FALSE(EntryExists(file_in_root));
   EXPECT_TRUE(EntryExists(dir_in_root));
   EXPECT_TRUE(EntryExists(file_in_subdir));
@@ skipping 785 matching lines @@
 
   // Try to close the same file twice.
   file_system_->CloseFile(kFileInRoot, close_file_callback);
   message_loop_.Run();
 
   // It must fail.
   EXPECT_EQ(GDATA_FILE_ERROR_NOT_FOUND, callback_helper_->last_error_);
 }
 
 }   // namespace gdata