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

chrome/browser/ui/ash/app_list/app_list_presenter_service.h

Index: chrome/browser/ui/ash/app_list/app_list_presenter_service.h
diff --git a/chrome/browser/ui/ash/app_list/app_list_presenter_service.h b/chrome/browser/ui/ash/app_list/app_list_presenter_service.h
index 3e00e8bf92262f7ef180fea604ed1c2eed83806c..969cc8e46c47ab00a72e58b68a707c132ffdabd6 100644
--- a/chrome/browser/ui/ash/app_list/app_list_presenter_service.h
+++ b/chrome/browser/ui/ash/app_list/app_list_presenter_service.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_UI_ASH_APP_LIST_APP_LIST_PRESENTER_SERVICE_H_
 
 #include "base/macros.h"
+#include "mojo/public/cpp/bindings/binding.h"
 #include "ui/app_list/presenter/app_list_presenter.mojom.h"
 
 namespace app_list {
@@ -26,6 +27,8 @@ class AppListPresenterService : public app_list::mojom::AppListPresenter {
  private:
   app_list::AppListPresenter* GetPresenter();
 
+  mojo::Binding<app_list::mojom::AppListPresenter> binding_;
+
   DISALLOW_COPY_AND_ASSIGN(AppListPresenterService);
 };