Add policy for ash launcher auto-hide behavior

chrome/browser/ui/ash/launcher/chrome_launcher_controller.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_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_
 
 #include <string>
 
 #include "ash/launcher/launcher_delegate.h"
@@ skipping 198 matching lines @@
 
   // Updates the pinned pref state. The pinned state consists of a list pref.
   // Each item of the list is a dictionary. The key |kAppIDPath| gives the
   // id of the app.
   virtual void PersistPinnedState() = 0;
 
   virtual ash::LauncherModel* model() = 0;
 
   virtual Profile* profile() = 0;
 
-  virtual void SetAutoHideBehavior(ash::ShelfAutoHideBehavior behavior,
-                                   aura::RootWindow* root_window) = 0;
+  // Gets the shelf auto-hide behavior on |root_window|.
+  virtual ash::ShelfAutoHideBehavior GetShelfAutoHideBehavior(
+      aura::RootWindow* root_window) const = 0;
+
+  // Returns |true| if the user is allowed to modify the shelf auto-hide
+  // behavior on |root_window|.
+  virtual bool CanUserModifyShelfAutoHideBehavior(
+      aura::RootWindow* root_window) const = 0;
+
+  // Toggles the shelf auto-hide behavior on |root_window|. Does nothing if the
+  // user is not allowed to modify the auto-hide behavior.
+  virtual void ToggleShelfAutoHideBehavior(aura::RootWindow* root_window) = 0;
 
   // The tab no longer represents its previously identified application.
   virtual void RemoveTabFromRunningApp(TabContents* tab,
                                        const std::string& app_id) = 0;
 
   // Notify the controller that the state of an non platform app's tabs
   // have changed,
   virtual void UpdateAppState(content::WebContents* contents,
                               AppState app_state) = 0;
 
@@ skipping 31 matching lines @@
   virtual void SetAppTabHelperForTest(AppTabHelper* helper) = 0;
   virtual void SetAppIconLoaderForTest(AppIconLoader* loader) = 0;
   virtual const std::string& GetAppIdFromLauncherIdForTest(
       ash::LauncherID id) = 0;
 
  private:
   static ChromeLauncherController* instance_;
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_