cleanup: cpplint src/extension/*

extensions/browser/view_type_utils.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 EXTENSIONS_BROWSER_VIEW_TYPE_UTILS_H_
 #define EXTENSIONS_BROWSER_VIEW_TYPE_UTILS_H_
 
 #include "extensions/common/view_type.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
 
 // Get/Set the type of a WebContents.
 // GetViewType handles a NULL |tab| for convenience by returning
 // VIEW_TYPE_INVALID.
 ViewType GetViewType(content::WebContents* tab);
 void SetViewType(content::WebContents* tab, ViewType type);
 
-}  // namespace chrome
+}  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_VIEW_TYPE_UTILS_H_