mash: Have chrome set itself as the app list presenter.

ash/mus/app_list_presenter_mus.h

Index: ash/mus/app_list_presenter_mus.h
diff --git a/ash/mus/app_list_presenter_mus.h b/ash/mus/app_list_presenter_mus.h
index 2ed64ee8cc20e0aa7a466974c4104c1bf199e4d3..51275572f3f87543d0507ea96529abbf58b5a7c5 100644
--- a/ash/mus/app_list_presenter_mus.h
+++ b/ash/mus/app_list_presenter_mus.h
@@ -7,19 +7,14 @@
 
 #include "base/macros.h"
 #include "ui/app_list/presenter/app_list_presenter.h"
-#include "ui/app_list/presenter/app_list_presenter.mojom.h"
-
-namespace service_manager {
-class Connector;
-}
 
 namespace ash {
 
 // Mus+ash implementation of the AppListPresenter interface for mash, which
-// talks to the app list service in chrome.
+// talks to the app list presenter service in chrome.
 class AppListPresenterMus : public app_list::AppListPresenter {
  public:
-  explicit AppListPresenterMus(service_manager::Connector* connector);
+  AppListPresenterMus();
   ~AppListPresenterMus() override;
 
   // app_list::AppListPresenter:
@@ -30,13 +25,6 @@ class AppListPresenterMus : public app_list::AppListPresenter {
   bool GetTargetVisibility() const override;
 
  private:
-  // Connect to the app list service in chrome if the connection hasn't
-  // been established or has an error.
-  void ConnectIfNeeded();
-
-  service_manager::Connector* connector_;
-  app_list::mojom::AppListPresenterPtr presenter_;
-
   DISALLOW_COPY_AND_ASSIGN(AppListPresenterMus);
 };