Cleanup coding style

extensions/common/value_builder.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.
 
 // This file provides a builders for DictionaryValue and ListValue.  These
 // aren't specific to extensions and could move up to base/ if there's interest
 // from other sub-projects.
 //
 // The general pattern is to write:
 //
@@ skipping 82 matching lines @@
   ListBuilder& Append(ListBuilder& in_value);
 
   // Named differently because overload resolution is too eager to
   // convert implicitly to bool.
   ListBuilder& AppendBoolean(bool in_value);
 
  private:
   scoped_ptr<base::ListValue> list_;
 };
 
-} // namespace extensions
+}  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_VALUE_BUILDER_H_