Move ownership of the AppListViewDelegate into the AppListService

ui/app_list/views/app_list_view.h

Index: ui/app_list/views/app_list_view.h
diff --git a/ui/app_list/views/app_list_view.h b/ui/app_list/views/app_list_view.h
index bf83fc18fed3ef79c3ff53c090d5117c96df0278..d1ee3384f56052b0bd4554ba54128ffd549b4d3d 100644
--- a/ui/app_list/views/app_list_view.h
+++ b/ui/app_list/views/app_list_view.h
@@ -42,7 +42,7 @@ class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
                                     public AppListViewDelegateObserver,
                                     public SpeechUIModelObserver {
  public:
-  // Takes ownership of |delegate|.
+  // Does not take ownership of |delegate|.
   explicit AppListView(AppListViewDelegate* delegate);
   virtual ~AppListView();
 
@@ -156,7 +156,7 @@ class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
   virtual void OnSpeechRecognitionStateChanged(
       SpeechRecognitionState new_state) OVERRIDE;
 
-  scoped_ptr<AppListViewDelegate> delegate_;
+  AppListViewDelegate* delegate_;  // Weak. Owned by AppListService.
 
   AppListMainView* app_list_main_view_;
   SpeechView* speech_view_;