Show Play Store rating and price in app list

ui/app_list/views/search_result_tile_item_view.h

Index: ui/app_list/views/search_result_tile_item_view.h
diff --git a/ui/app_list/views/search_result_tile_item_view.h b/ui/app_list/views/search_result_tile_item_view.h
index 3f5ff19fe4083c32a2f2186e685041435dc2b60c..17e40f4dc8fb6a8c9ec85dfa2e68a433855219cb 100644
--- a/ui/app_list/views/search_result_tile_item_view.h
+++ b/ui/app_list/views/search_result_tile_item_view.h
@@ -12,6 +12,7 @@
 
 namespace views {
 class MenuRunner;
+class Label;
 }
 
 namespace app_list {
@@ -40,6 +41,8 @@ class APP_LIST_EXPORT SearchResultTileItemView
   // Overridden from SearchResultObserver:
   void OnIconChanged() override;
   void OnBadgeIconChanged() override;
+  void OnRatingChanged() override;
+  void OnFormattedPriceChanged() override;
   void OnResultDestroying() override;
 
   // views::ContextMenuController overrides:
@@ -48,6 +51,13 @@ class APP_LIST_EXPORT SearchResultTileItemView
                               ui::MenuSourceType source_type) override;
 
  private:
+  // Shows rating in proper format if |rating| is not negative. Otherwise, hides
+  // the rating label.
+  void SetRating(float rating);
+
+  // Shows price if |price| is not empty. Otherwise, hides the price label.
+  void SetPrice(const base::string16& price);
+
   // Overridden from views::View:
   void Layout() override;
   gfx::Size CalculatePreferredSize() const override;
@@ -55,7 +65,10 @@ class APP_LIST_EXPORT SearchResultTileItemView
   SearchResultContainerView* result_container_;  // Parent view
 
   // Owned by the model provided by the AppListViewDelegate.
-  SearchResult* item_;
+  SearchResult* item_ = nullptr;
+
+  views::Label* rating_ = nullptr;  // Owned by views hierarchy.
+  views::Label* price_ = nullptr;   // Owned by views hierarchy.
 
   AppListViewDelegate* view_delegate_;