arc: Closing LSO page shoud disable ARC.

chrome/browser/chromeos/arc/arc_session_manager.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/chromeos/arc/arc_session_manager.h"
 
 #include <utility>
 
 #include "ash/common/shelf/shelf_delegate.h"
 #include "ash/common/wm_shell.h"
@@ skipping 704 matching lines @@
 }
 
 void ArcSessionManager::CancelAuthCode() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   if (state_ == State::NOT_INITIALIZED) {
     NOTREACHED();
     return;
   }
 
-  // In case |state_| is ACTIVE, UI page can be ARC_LOADING (which means normal
-  // ARC booting) or ERROR (in case ARC can not be started). If ARC is booting
-  // normally don't stop it on progress close.
+  // If ARC failed to boot normally, stop ARC. Similarly, if the current page is
+  // LSO, closing the window should stop ARC since the user activity chooses to
+  // not sign in. In any other case, ARC is booting normally and the instance
+  // should not be stopped.
   if ((state_ != State::SHOWING_TERMS_OF_SERVICE &&
        state_ != State::CHECKING_ANDROID_MANAGEMENT) &&
       (!support_host_ ||
-       support_host_->ui_page() != ArcSupportHost::UIPage::ERROR)) {
+       (support_host_->ui_page() != ArcSupportHost::UIPage::ERROR &&
+        support_host_->ui_page() != ArcSupportHost::UIPage::LSO))) {
     return;
   }
 
   // Update UMA with user cancel only if error is not currently shown.
   if (support_host_ &&
       support_host_->ui_page() != ArcSupportHost::UIPage::NO_PAGE &&
       support_host_->ui_page() != ArcSupportHost::UIPage::ERROR) {
     UpdateOptInCancelUMA(OptInCancelReason::USER_CANCEL);
   }
 
@@ skipping 244 matching lines @@
       return os << "ACTIVE";
   }
 
   // Some compiler reports an error even if all values of an enum-class are
   // covered indivisually in a switch statement.
   NOTREACHED();
   return os;
 }
 
 }  // namespace arc