app_list: Show apps grid after installing from cws result.

chrome/browser/ui/app_list/app_list_service_mac.mm

Index: chrome/browser/ui/app_list/app_list_service_mac.mm
diff --git a/chrome/browser/ui/app_list/app_list_service_mac.mm b/chrome/browser/ui/app_list/app_list_service_mac.mm
index 56b9db4639e13a1d1b361286307aff7ea1c7a136..9fe7776ae1236350a11393bfce7e07ff0c15519e 100644
--- a/chrome/browser/ui/app_list/app_list_service_mac.mm
+++ b/chrome/browser/ui/app_list/app_list_service_mac.mm
@@ -118,6 +118,7 @@ class AppListControllerDelegateCocoa : public AppListControllerDelegate {
   virtual void LaunchApp(Profile* profile,
                          const extensions::Extension* extension,
                          int event_flags) OVERRIDE;
+  virtual void ShowAppsGrid() OVERRIDE;
 
   DISALLOW_COPY_AND_ASSIGN(AppListControllerDelegateCocoa);
 };
@@ -268,6 +269,10 @@ void AppListControllerDelegateCocoa::LaunchApp(
       profile, extension, NEW_FOREGROUND_TAB));
 }
 
+void AppListControllerDelegateCocoa::ShowAppsGrid() {
+  NOTIMPLEMENTED();
+}
+
 void AppListServiceMac::CreateAppList(Profile* requested_profile) {
   if (profile() == requested_profile)
     return;