mash: Refactor ChromeLauncherController's ShelfDelegate code.

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

 // Copyright 2013 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_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <map>
@@ skipping 280 matching lines @@
   ash::ShelfID GetShelfIDForAppID(const std::string& app_id) override {
     return controller_->GetShelfIDForAppID(app_id);
   };
 
   ash::ShelfID GetShelfIDForAppIDAndLaunchID(
       const std::string& app_id,
       const std::string& launch_id) override {
     return controller_->GetShelfIDForAppIDAndLaunchID(app_id, launch_id);
   }
 
-  bool HasShelfIDToAppIDMapping(ash::ShelfID id) const override {
-    return controller_->HasShelfIDToAppIDMapping(id);
-  }
-
   const std::string& GetAppIDForShelfID(ash::ShelfID id) override {
     return controller_->GetAppIDForShelfID(id);
   }
 
   void PinAppWithID(const std::string& app_id) override {
     return controller_->PinAppWithID(app_id);
   }
 
   bool IsAppPinned(const std::string& app_id) override {
     return controller_->IsAppPinned(app_id);
@@ skipping 4109 matching lines @@
   EXPECT_EQ(ash::SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS,
             shelf_controller->auto_hide());
   EXPECT_EQ(2u, shelf_controller->auto_hide_change_count());
 
   PrefService* prefs = profile()->GetTestingPrefService();
   EXPECT_EQ("Left", prefs->GetString(prefs::kShelfAlignmentLocal));
   EXPECT_EQ("Left", prefs->GetString(prefs::kShelfAlignment));
   EXPECT_EQ("Always", prefs->GetString(prefs::kShelfAutoHideBehaviorLocal));
   EXPECT_EQ("Always", prefs->GetString(prefs::kShelfAutoHideBehavior));
 }