Switch to standard integer types in extensions/.

extensions/common/manifest_handlers/oauth2_manifest_handler.cc

 // Copyright (c) 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 "extensions/common/manifest_handlers/oauth2_manifest_handler.h"
 
+#include <stddef.h>
+
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/manifest_constants.h"
 
 namespace {
 
 // Manifest keys.
@@ skipping 72 matching lines @@
 
   extension->SetManifestData(keys::kOAuth2, info.release());
   return true;
 }
 
 const std::vector<std::string> OAuth2ManifestHandler::Keys() const {
   return SingleKey(keys::kOAuth2);
 }
 
 }  // namespace extensions