Show Play Store rating and price in app list

ui/app_list/search_result_observer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_APP_LIST_SEARCH_RESULT_OBSERVER_H_
 #define UI_APP_LIST_SEARCH_RESULT_OBSERVER_H_
 
 #include "ui/app_list/app_list_export.h"
 
 namespace app_list {
 
 class APP_LIST_EXPORT SearchResultObserver {
  public:
   // Invoked when the SearchResult's icon has changed.
   virtual void OnIconChanged() {}
 
   // Invoked when the SearchResult's badge icon has changed.
   virtual void OnBadgeIconChanged() {}
 
+  // Invoked when the SearchResult's app rating has changed.
+  virtual void OnRatingChanged() {}
+
+  // Invoked when the SearchResult's app formatted price has changed.
+  virtual void OnFormattedPriceChanged() {}
+
   // Invoked when the SearchResult's actions have changed.
   virtual void OnActionsChanged() {}
 
   // Invoked when the SearchResult's is_installing flag has changed.
   virtual void OnIsInstallingChanged() {}
 
   // Invoked when the download percentage has changed.
   virtual void OnPercentDownloadedChanged() {}
 
   // Invoked when the item represented by the SearchResult is installed.
   virtual void OnItemInstalled() {}
 
   // Invoked just before the SearchResult is destroyed.
   virtual void OnResultDestroying() {}
 
   // Invoked when SearchResult has an associated view, and the mouse cursor
   // enters or exits that view. This is needed because the view is
   // views::WebView and existing views mouse enter/exit events that are sent to
   // its parent indicate the mouse "exited" the parent when it's actually over
   // the WebView child.
   virtual void OnViewHoverStateChanged() {}
 
  protected:
   virtual ~SearchResultObserver() {}
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_SEARCH_RESULT_OBSERVER_H_