arc: Add support of default and OEM apps.

chrome/browser/ui/app_list/arc/arc_app_utils.cc

 // Copyright 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/ui/app_list/arc/arc_app_utils.h"
 
 #include <string>
 
 #include "ash/shell.h"
 #include "base/bind.h"
@@ skipping 204 matching lines @@
 
 bool LaunchApp(content::BrowserContext* context,
                const std::string& app_id,
                bool landscape_layout) {
   const ArcAppListPrefs* prefs = ArcAppListPrefs::Get(context);
   std::unique_ptr<ArcAppListPrefs::AppInfo> app_info = prefs->GetApp(app_id);
   if (app_info && !app_info->ready) {
     if (!ash::Shell::HasInstance())
       return false;
 
+    ArcAuthService* auth_service = ArcAuthService::Get();
+    DCHECK(auth_service);
+
+    if (!auth_service->IsArcEnabled()) {

[xiyuan, 2016/08/26 19:32:30]

Can we limit this to only default apps?

[khmel, 2016/08/26 23:26:18]

Actually we should have here only default apps. So assert looks good for this
case.

+      auth_service->EnableArc();
+      if (!auth_service->IsArcEnabled()) {
+        NOTREACHED();
+        return false;
+      }
+    }
+
     ChromeLauncherController* chrome_controller =
         ChromeLauncherController::instance();
     DCHECK(chrome_controller);
     chrome_controller->GetArcDeferredLauncher()->RegisterDeferredLaunch(app_id);
     return true;
   }
 
   return (new LaunchAppWithoutSize(context, app_id, landscape_layout))
       ->LaunchAndRelease();
 }
@@ skipping 91 matching lines @@
   if (!app_instance)
     return false;
 
   app_instance->ShowPackageInfoOnPage(
       package_name, page,
       GetTargetRect(gfx::Size(kNexus7Width, kNexus7Height)));
   return true;
 }
 
 }  // namespace arc