arc: Support pinned apps across Arc-enabled and Arc-disabled platforms.

chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller_mus.h"
 
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/ash/launcher/chrome_mash_shelf_controller.h"
 
 // static
@@ skipping 111 matching lines @@
   NOTIMPLEMENTED();
   return false;
 }
 
 void ChromeLauncherControllerMus::SetLaunchType(
     ash::ShelfID id,
     extensions::LaunchType launch_type) {
   NOTIMPLEMENTED();
 }
 
-void ChromeLauncherControllerMus::PersistPinnedState() {
-  NOTIMPLEMENTED();
-}
-
 Profile* ChromeLauncherControllerMus::GetProfile() {
   return ProfileManager::GetActiveUserProfile();
 }
 
 void ChromeLauncherControllerMus::UpdateAppState(content::WebContents* contents,
                                                  AppState app_state) {
   NOTIMPLEMENTED();
 }
 
 ash::ShelfID ChromeLauncherControllerMus::GetShelfIDForWebContents(
@@ skipping 107 matching lines @@
     const std::string& app_id) {
   NOTIMPLEMENTED();
   return AppListControllerDelegate::NO_PIN;
 }
 
 ArcAppDeferredLauncherController*
 ChromeLauncherControllerMus::GetArcDeferredLauncher() {
   NOTIMPLEMENTED();
   return nullptr;
 }