Replace ShelfItemDelegate::GetTitle() with ShelfItem::title.

chrome/browser/ui/ash/launcher/arc_app_window_launcher_item_controller.cc

Index: chrome/browser/ui/ash/launcher/arc_app_window_launcher_item_controller.cc
diff --git a/chrome/browser/ui/ash/launcher/arc_app_window_launcher_item_controller.cc b/chrome/browser/ui/ash/launcher/arc_app_window_launcher_item_controller.cc
index 88cf6a5018b8190b8b4e83fd71ae4c495996c62f..6e3d940824baab352bf267540a2cbfa0616641cc 100644
--- a/chrome/browser/ui/ash/launcher/arc_app_window_launcher_item_controller.cc
+++ b/chrome/browser/ui/ash/launcher/arc_app_window_launcher_item_controller.cc
@@ -13,6 +13,7 @@
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_app_menu_item_v2app.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 #include "chrome/browser/ui/ash/launcher/launcher_application_menu_item_model.h"
+#include "chrome/browser/ui/ash/launcher/launcher_controller_helper.h"
 #include "ui/aura/window.h"
 #include "ui/base/base_window.h"
 
@@ -49,20 +50,6 @@ ArcAppWindowLauncherItemController::ItemSelected(const ui::Event& event) {
   }
 }
 
-base::string16 ArcAppWindowLauncherItemController::GetTitle() {
-  ArcAppListPrefs* arc_prefs =
-      ArcAppListPrefs::Get(launcher_controller()->profile());
-  DCHECK(arc_prefs);
-  std::unique_ptr<ArcAppListPrefs::AppInfo> app_info = arc_prefs->GetApp(
-      ArcAppWindowLauncherController::GetArcAppIdFromShelfAppId(app_id()));
-  if (!app_info) {
-    NOTREACHED();
-    return base::string16();
-  }
-
-  return base::UTF8ToUTF16(app_info->name);
-}
-
 ash::ShelfMenuModel* ArcAppWindowLauncherItemController::CreateApplicationMenu(
     int event_flags) {
   return new LauncherApplicationMenuItemModel(GetApplicationList(event_flags));
@@ -72,6 +59,8 @@ ChromeLauncherAppMenuItems
 ArcAppWindowLauncherItemController::GetApplicationList(int event_flags) {
   ChromeLauncherAppMenuItems items =
       AppWindowLauncherItemController::GetApplicationList(event_flags);
+  base::string16 app_title = LauncherControllerHelper::GetAppTitle(
+      launcher_controller()->profile(), app_id());
   for (auto it = windows().begin(); it != windows().end(); ++it) {
     // TODO(khmel): resolve correct icon here.
     size_t i = std::distance(windows().begin(), it);
@@ -79,7 +68,7 @@ ArcAppWindowLauncherItemController::GetApplicationList(int event_flags) {
     aura::Window* window = (*it)->GetNativeWindow();
     items.push_back(base::MakeUnique<ChromeLauncherAppMenuItemV2App>(
         ((window && !window->GetTitle().empty()) ? window->GetTitle()
-                                                 : GetTitle()),
+                                                 : app_title),
         &image, app_id(), launcher_controller(), i,
         i == 0 /* has_leading_separator */));
   }