Use mojo app list interfaces for mash and classic ash.

ash/test/test_shell_delegate.h

Index: ash/test/test_shell_delegate.h
diff --git a/ash/test/test_shell_delegate.h b/ash/test/test_shell_delegate.h
index a2722bec7e1bea744116d54b843ef297f8b1aed5..fe30c3c90bc3ee9ee47efa7af02c89d98a3e7aaf 100644
--- a/ash/test/test_shell_delegate.h
+++ b/ash/test/test_shell_delegate.h
@@ -12,11 +12,6 @@
 #include "ash/common/test/test_session_state_delegate.h"
 #include "base/macros.h"
 
-namespace app_list {
-class AppListPresenterDelegateFactory;
-class AppListPresenterImpl;
-}
-
 namespace keyboard {
 class KeyboardUI;
 }
@@ -45,7 +40,6 @@ class TestShellDelegate : public ShellDelegate {
   void Exit() override;
   keyboard::KeyboardUI* CreateKeyboardUI() override;
   void OpenUrlFromArc(const GURL& url) override;
-  app_list::AppListPresenter* GetAppListPresenter() override;
   ShelfDelegate* CreateShelfDelegate(ShelfModel* model) override;
   SystemTrayDelegate* CreateSystemTrayDelegate() override;
   std::unique_ptr<WallpaperDelegate> CreateWallpaperDelegate() override;
@@ -65,10 +59,6 @@ class TestShellDelegate : public ShellDelegate {
 
   int num_exit_requests() const { return num_exit_requests_; }
 
-  app_list::AppListPresenterImpl* app_list_presenter() {
-    return app_list_presenter_.get();
-  }
-
   void SetForceMaximizeOnFirstRun(bool maximize) {
     force_maximize_on_first_run_ = maximize;
   }
@@ -79,10 +69,6 @@ class TestShellDelegate : public ShellDelegate {
   bool force_maximize_on_first_run_;
   bool touchscreen_enabled_in_local_pref_;
 
-  std::unique_ptr<app_list::AppListPresenterDelegateFactory>
-      app_list_presenter_delegate_factory_;
-  std::unique_ptr<app_list::AppListPresenterImpl> app_list_presenter_;
-
   DISALLOW_COPY_AND_ASSIGN(TestShellDelegate);
 };