Flush TaskScheduler in ProfileBrowserTest.*.

chrome/browser/profiles/profile_browsertest.cc

 // Copyright (c) 2012 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/profiles/profile.h"
 
 #include <stddef.h>
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/task_scheduler/task_scheduler.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/net/url_request_mock_util.h"
 #include "chrome/browser/profiles/chrome_version_service.h"
 #include "chrome/browser/profiles/profile_impl.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 114 matching lines @@
 }
 
 void SpinThreads() {
   // Give threads a chance to do their stuff before shutting down (i.e.
   // deleting scoped temp dir etc).
   // Should not be necessary anymore once Profile deletion is fixed
   // (see crbug.com/88586).
   content::RunAllPendingInMessageLoop();
   content::RunAllPendingInMessageLoop(content::BrowserThread::DB);
   content::RunAllPendingInMessageLoop(content::BrowserThread::FILE);
+
+  // This prevents HistoryBackend from accessing its databases after the
+  // directory that contains them has been deleted.
+  base::TaskScheduler::GetInstance()->FlushForTesting();
 }
 
 // Sends an HttpResponse for requests for "/" that result in sending an HPKP
 // report.  Ignores other paths to avoid catching the subsequent favicon
 // request.
 std::unique_ptr<net::test_server::HttpResponse> SendReportHttpResponse(
     const GURL& report_url,
     const net::test_server::HttpRequest& request) {
   if (request.relative_url == "/") {
     std::unique_ptr<net::test_server::BasicHttpResponse> response(
@@ skipping 672 matching lines @@
       base::Bind(&SendReportHttpResponse, embedded_test_server()->base_url()));
   ASSERT_TRUE(hpkp_test_server.Start());
 
   // To send a report, must use a non-numeric host name for the original
   // request.  This must not match the host name of the server that reports are
   // sent to.
   ui_test_utils::NavigateToURL(browser(),
                                hpkp_test_server.GetURL("localhost", "/"));
   wait_for_report_loop.Run();
 }