Remove StartPageView from being a AppListViewDelegateObserver

ui/app_list/views/start_page_view.cc

Index: ui/app_list/views/start_page_view.cc
diff --git a/ui/app_list/views/start_page_view.cc b/ui/app_list/views/start_page_view.cc
index 0f444591a17f467da95fc4ad222710d1c007887b..23d2f643aee1956381bd4c8c36e4b68ae000a517 100644
--- a/ui/app_list/views/start_page_view.cc
+++ b/ui/app_list/views/start_page_view.cc
@@ -89,11 +89,9 @@ StartPageView::StartPageView(AppListMainView* app_list_main_view,
   AddChildView(tiles_container_);
 
   SetModel(view_delegate_->GetModel());
-  view_delegate_->AddObserver(this);
 }
 
 StartPageView::~StartPageView() {
-  view_delegate_->RemoveObserver(this);
   if (search_results_model_)
     search_results_model_->RemoveObserver(this);
 }
@@ -244,10 +242,6 @@ void StartPageView::QueryChanged(SearchBoxView* sender) {
   sender->search_box()->SetText(base::string16());
 }
 
-void StartPageView::OnProfilesChanged() {
-  SetModel(view_delegate_->GetModel());
-}
-
 void StartPageView::ListItemsAdded(size_t start, size_t count) {
   ScheduleUpdate();
 }