mash: Replace ShelfItemDelegate::CanPin with ShelfItem::pinned_by_policy.

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 "base/strings/string_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/ash/chrome_launcher_prefs.h"
@@ skipping 95 matching lines @@
 
 bool ChromeLauncherControllerMus::IsPinned(ash::ShelfID id) {
   NOTIMPLEMENTED();
   return false;
 }
 
 void ChromeLauncherControllerMus::TogglePinned(ash::ShelfID id) {
   NOTIMPLEMENTED();
 }
 
-bool ChromeLauncherControllerMus::IsPinnable(ash::ShelfID id) const {
-  NOTIMPLEMENTED();
-  return false;
-}
-
 void ChromeLauncherControllerMus::LockV1AppWithID(const std::string& app_id) {
   NOTIMPLEMENTED();
 }
 
 void ChromeLauncherControllerMus::UnlockV1AppWithID(const std::string& app_id) {
   NOTIMPLEMENTED();
 }
 
 void ChromeLauncherControllerMus::Launch(ash::ShelfID id, int event_flags) {
   NOTIMPLEMENTED();
@@ skipping 173 matching lines @@
     app_id_to_item_delegate_.insert(
         std::make_pair(app_id, std::move(delegate)));
 
     AppIconLoader* app_icon_loader = GetAppIconLoaderForApp(app_id);
     if (app_icon_loader) {
       app_icon_loader->FetchImage(app_id);
       app_icon_loader->UpdateImage(app_id);
     }
   }
 }