Remove SetModel in ContentsView and SearchBoxView.

ui/app_list/views/contents_view.h

Index: ui/app_list/views/contents_view.h
diff --git a/ui/app_list/views/contents_view.h b/ui/app_list/views/contents_view.h
index f9f31ab00b3f889677e7aa1a8bbd15434c95f455..f0b974cf12b7f989ff0421131a80dc795eb7c29f 100644
--- a/ui/app_list/views/contents_view.h
+++ b/ui/app_list/views/contents_view.h
@@ -30,11 +30,10 @@ class PaginationModel;
 class ContentsView : public views::View {
  public:
   ContentsView(AppListMainView* app_list_main_view,
-               PaginationModel* pagination_model);
+               PaginationModel* pagination_model,
+               AppListModel* model);
   virtual ~ContentsView();
 
-  void SetModel(AppListModel* model);
-
   // If |drag_and_drop| is not NULL it will be called upon drag and drop
   // operations outside the application list.
   void SetDragAndDropHostOfCurrentAppList(