cros: Enable Drive apps integration in app launcher.

chrome/browser/ui/app_list/app_list_syncable_service.cc

 // Copyright 2013 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/ui/app_list/app_list_syncable_service.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/apps/drive/drive_app_provider.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 254 matching lines @@
     apps_builder_->InitializeWithService(this);
   } else {
     VLOG(1) << this << ": AppListSyncableService: InitializeWithProfile.";
     apps_builder_->InitializeWithProfile(profile_, model_.get());
   }
 
   if (app_list::switches::IsDriveAppsInAppListEnabled())
     drive_app_provider_.reset(new DriveAppProvider(profile_));
 }
 
+void AppListSyncableService::ResetDriveAppProviderForTest() {
+  drive_app_provider_.reset();
+}
+
 void AppListSyncableService::Shutdown() {
   // DriveAppProvider touches other KeyedServices in its dtor and needs be
   // released in shutdown stage.
   drive_app_provider_.reset();
 }
 
 void AppListSyncableService::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
@@ skipping 628 matching lines @@
   } else {
     res += " { " + item_name + " }";
     res += " [" + item_ordinal.ToDebugString() + "]";
     if (!parent_id.empty())
       res += " <" + parent_id.substr(0, 8) + ">";
   }
   return res;
 }
 
 }  // namespace app_list