arc: Make Play Store item persistance in shelf.

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

+// Copyright (c) 2016 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.
+
+#include "chrome/browser/chromeos/arc/arc_auth_service.h"
+#include "chrome/browser/chromeos/arc/arc_support_host.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/app_list/arc/arc_app_launcher.h"
+#include "chrome/browser/ui/app_list/arc/arc_app_utils.h"
+#include "chrome/browser/ui/ash/launcher/arc_playstore_shortcut_launcher_item_controller.h"
+#include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
+
+ArcPlaystoreShortcutLauncherItemController::
+    ArcPlaystoreShortcutLauncherItemController(
+        ChromeLauncherController* controller)
+    : AppShortcutLauncherItemController(ArcSupportHost::kHostAppId,
+                                        controller) {}
+
+ArcPlaystoreShortcutLauncherItemController::
+    ~ArcPlaystoreShortcutLauncherItemController() {}
+
+ash::ShelfItemDelegate::PerformedAction
+ArcPlaystoreShortcutLauncherItemController::Activate(ash::LaunchSource source) {
+  arc::ArcAuthService* auth_service = arc::ArcAuthService::Get();
+  DCHECK(auth_service->IsAllowed());
+
+  if (!auth_service->IsArcEnabled())
+    auth_service->EnableArc();
+
+  // Deferred launcher.
+  playstore_launcher_.reset(
+      new ArcAppLauncher(controller()->profile(), arc::kPlayStoreAppId, true));
+
+  return kNoAction;
+}