[NTP4] Make TilePage and CardSlider evented to simplify code and fix page switcher bug

chrome/browser/ui/webui/ntp/app_launcher_handler.h

Index: chrome/browser/ui/webui/ntp/app_launcher_handler.h
diff --git a/chrome/browser/ui/webui/ntp/app_launcher_handler.h b/chrome/browser/ui/webui/ntp/app_launcher_handler.h
index 4f32ad9b377e8bdb907e9595fd112bf8036eaea5..1d9b4b1336ec2b805c974c206c370dc920d4a735 100644
--- a/chrome/browser/ui/webui/ntp/app_launcher_handler.h
+++ b/chrome/browser/ui/webui/ntp/app_launcher_handler.h
@@ -123,6 +123,9 @@ class AppLauncherHandler : public content::WebUIMessageHandler,
     StringOrdinal page_ordinal;
   };
 
+  // Reset some instance flags we use to track the currently uninstalling app.
+  void CleanupAfterUninstall();
+
   // Records a web store launch in the appropriate histograms. |promo_active|
   // specifies if the web store promotion was active.
   static void RecordWebStoreLaunch(bool promo_active);
@@ -202,6 +205,11 @@ class AppLauncherHandler : public content::WebUIMessageHandler,
   // when the app is added to the page (via getAppsCallback or appAdded).
   std::string highlight_app_id_;
 
+  // Used to determine if the current instance of AppLauncherHandler called
+  // ExtensionUninstallAccepted(). If the current one was the one that called
+  // this, we use this value to animate the removal on the attached NTP.
+  bool uninstall_from_page_;
+
   // Hold state for favicon requests.
   CancelableRequestConsumerTSimple<AppInstallInfo*> favicon_consumer_;