Switch to standard integer types in components/, part 1 of 4.

components/drive/file_system_metadata.h

 // 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.
 
 #ifndef COMPONENTS_DRIVE_FILE_SYSTEM_METADATA_H_
 #define COMPONENTS_DRIVE_FILE_SYSTEM_METADATA_H_
 
-#include "base/basictypes.h"
+#include <stdint.h>
+
 #include "base/time/time.h"
 #include "components/drive/file_errors.h"
 
 namespace drive {
 
 // Metadata of FileSystem. Used by FileSystem::GetMetadata().
 struct FileSystemMetadata {
   FileSystemMetadata();
   ~FileSystemMetadata();
 
   // The largest changestamp that the file system holds (may be different
   // from the one on the server)
-  int64 largest_changestamp;
+  int64_t largest_changestamp;
 
   // True if the resource metadata is now being fetched from the server.
   bool refreshing;
 
   // Time of the last update check.
   base::Time last_update_check_time;
 
   // Error code of the last update check.
   FileError last_update_check_error;
 };
 
 }  // namespace drive
 
 #endif  // COMPONENTS_DRIVE_FILE_SYSTEM_METADATA_H_