Implement sidebar support for extension action popups

chrome/browser/ui/browser.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 CHROME_BROWSER_UI_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 120 matching lines @@
   // Possible elements of the Browser window.
   enum WindowFeature {
     FEATURE_NONE = 0,
     FEATURE_TITLEBAR = 1,
     FEATURE_TABSTRIP = 2,
     FEATURE_TOOLBAR = 4,
     FEATURE_LOCATIONBAR = 8,
     FEATURE_BOOKMARKBAR = 16,
     FEATURE_INFOBAR = 32,
     FEATURE_DOWNLOADSHELF = 64,
-    FEATURE_WEBAPPFRAME = 128
+    FEATURE_WEBAPPFRAME = 128,
+    FEATURE_SIDEBAR = 256
   };
 
   // The context for a download blocked notification from
   // OkToCloseWithInProgressDownloads.
   enum DownloadClosePreventionType {
     // Browser close is not blocked by download state.
     DOWNLOAD_CLOSE_OK,
 
     // The browser is shutting down and there are active downloads
     // that would be cancelled.
@@ skipping 829 matching lines @@
   // The following factory is used for chrome update coalescing.
   base::WeakPtrFactory<Browser> chrome_updater_factory_;
 
   // The following factory is used to close the frame at a later time.
   base::WeakPtrFactory<Browser> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_