Persist the order of extensions in the browser action toolbar across sessions...

chrome/browser/extensions/extension_prefs.h

 // Copyright (c) 2009 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_EXTENSIONS_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 18 matching lines @@
   // Populate |killed_ids| with extension ids that have been killed.
   void GetKilledExtensionIds(std::set<std::string>* killed_ids);
 
   // Get the order that toolstrip URLs appear in the shelf.
   typedef std::vector<GURL> URLList;
   URLList GetShelfToolstripOrder();
 
   // Sets the order that toolstrip URLs appear in the shelf.
   void SetShelfToolstripOrder(const URLList& urls);
 
+  // Get the order that the browser actions appear in the toolbar.
+  std::vector<std::string> GetToolbarOrder();
+
+  // Set the order that the browser actions appear in the toolbar.
+  void SetToolbarOrder(const std::vector<std::string>& extension_ids);
+
   // Called when an extension is installed, so that prefs get created.
   void OnExtensionInstalled(Extension* extension);
 
   // Called when an extension is uninstalled, so that prefs get cleaned up.
   void OnExtensionUninstalled(const Extension* extension,
                               bool external_uninstall);
 
   // Returns the state (enabled/disabled) of the given extension.
   Extension::State GetExtensionState(const std::string& extension_id);
 
@@ skipping 80 matching lines @@
  private:
   // A copy of the extensions pref dictionary so that this can be passed
   // around without a dependency on prefs.
   scoped_ptr<DictionaryValue> extension_data_;
 
   DISALLOW_COPY_AND_ASSIGN(InstalledExtensions);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_