If force-sign-in policy is enabled, popup warning dialog before window closing if auth token becom…

chrome/browser/ui/views/app_modal_dialog_queue_wrapper.cc

+// Copyright 2017 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/views/app_modal_dialog_queue_wrapper.h"
+
+#include <algorithm>
+
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "components/app_modal/app_modal_dialog.h"
+#include "components/app_modal/app_modal_dialog_queue.h"
+#include "components/app_modal/native_app_modal_dialog.h"
+
+AppModalDialogQueueWrapper::AppModalDialogQueueWrapper()
+    : BrowserModalDialog(false) {}
+
+AppModalDialogQueueWrapper::~AppModalDialogQueueWrapper() {}
+
+void AppModalDialogQueueWrapper::ActivateModalDialog(Browser* browser) {
+  app_modal::AppModalDialogQueue* queue =
+      app_modal::AppModalDialogQueue::GetInstance();
+#if defined(USE_AURA) && defined(OS_CHROMEOS)

[sky, 2017/05/17 18:03:17]

Please add description as to why the two are different.

[zmin, 2017/05/18 03:31:17]

Done.

+  queue->ActivateModalDialog();
+#else
+  // Flash and activate the modal browser.
+  app_modal::AppModalDialog* active_dialog =
+      app_modal::AppModalDialogQueue::GetInstance()->active_dialog();
+  if (!active_dialog)
+    return;
+
+  Browser* modal_browser =
+      chrome::FindBrowserWithWebContents(active_dialog->web_contents());
+  if (modal_browser && (browser != modal_browser)) {
+    modal_browser->window()->FlashFrame(true);
+    modal_browser->window()->Activate();
+  }
+
+  queue->ActivateModalDialog();
+#endif
+}
+
+bool AppModalDialogQueueWrapper::IsShowing() {
+  app_modal::AppModalDialogQueue* queue =
+      app_modal::AppModalDialogQueue::GetInstance();
+  return queue->active_dialog() && queue->active_dialog()->native_dialog() &&
+         queue->active_dialog()->native_dialog()->IsShowing();
+}