Cleanup coding style

extensions/common/manifest.h

 // Copyright 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.
 
 #ifndef EXTENSIONS_COMMON_MANIFEST_H_
 #define EXTENSIONS_COMMON_MANIFEST_H_
 
 #include <map>
 #include <set>
 #include <string>
+#include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/values.h"
 
 namespace extensions {
 struct InstallWarning;
 
 // Wraps the DictionaryValue form of extension's manifest. Enforces access to
 // properties of the manifest using ManifestFeatureProvider.
@@ skipping 168 matching lines @@
   scoped_ptr<base::DictionaryValue> value_;
 
   Type type_;
 
   DISALLOW_COPY_AND_ASSIGN(Manifest);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_MANIFEST_H_