Remove PerBrowser launcher, reland step 1 of 2

ash/test/test_launcher_delegate.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 ASH_TEST_TEST_LAUNCHER_DELEGATE_H_
 #define ASH_TEST_TEST_LAUNCHER_DELEGATE_H_
 
 #include <map>
 #include <set>
 
@@ skipping 33 matching lines @@
   virtual ui::MenuModel* CreateContextMenu(const LauncherItem& item,
                                            aura::RootWindow* root) OVERRIDE;
   virtual ash::LauncherMenuModel* CreateApplicationMenu(
       const LauncherItem& item,
       int event_flags) OVERRIDE;
   virtual ash::LauncherID GetIDByWindow(aura::Window* window) OVERRIDE;
   virtual bool IsDraggable(const ash::LauncherItem& item) OVERRIDE;
   virtual bool ShouldShowTooltip(const LauncherItem& item) OVERRIDE;
   virtual void OnLauncherCreated(Launcher* launcher) OVERRIDE;
   virtual void OnLauncherDestroyed(Launcher* launcher) OVERRIDE;
-  virtual bool IsPerAppLauncher() OVERRIDE;
   virtual LauncherID GetLauncherIDForAppID(const std::string& app_id) OVERRIDE;
   virtual void PinAppWithID(const std::string& app_id) OVERRIDE;
   virtual bool IsAppPinned(const std::string& app_id) OVERRIDE;
   virtual void UnpinAppsWithID(const std::string& app_id) OVERRIDE;
 
  private:
   typedef std::map<aura::Window*, ash::LauncherID> WindowToID;
   typedef std::set<aura::Window*> ObservedWindows;
 
   static TestLauncherDelegate* instance_;
 
   aura::Window* GetWindowByID(ash::LauncherID id);
 
   LauncherModel* model_;
 
   // Maps from window to the id we gave it.
   WindowToID window_to_id_;
 
   DISALLOW_COPY_AND_ASSIGN(TestLauncherDelegate);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_TEST_LAUNCHER_DELEGATE_H_