Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

chrome/browser/lifetime/browser_close_manager_browsertest.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/lifetime/browser_close_manager.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
+#include "base/threading/thread_restrictions.h"
 #include "build/build_config.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/download/chrome_download_manager_delegate.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/download/download_service.h"
 #include "chrome/browser/download/download_service_factory.h"
@@ skipping 1133 matching lines @@
     EXPECT_EQ(1, DownloadService::NonMaliciousDownloadCountAllProfiles());
   else
     EXPECT_EQ(0, DownloadService::NonMaliciousDownloadCountAllProfiles());
 }
 
 // Test shutdown with a download in progress from one profile, where the only
 // open windows are for another profile.
 IN_PROC_BROWSER_TEST_P(BrowserCloseManagerWithDownloadsBrowserTest,
                        TestWithDownloadsFromDifferentProfiles) {
   ProfileManager* profile_manager = g_browser_process->profile_manager();
-  base::FilePath path =
-      profile_manager->user_data_dir().AppendASCII("test_profile");
-  if (!base::PathExists(path))
-    ASSERT_TRUE(base::CreateDirectory(path));
-  Profile* other_profile =
-      Profile::CreateProfile(path, NULL, Profile::CREATE_MODE_SYNCHRONOUS);
+  Profile* other_profile = nullptr;
+  {
+    base::FilePath path =
+        profile_manager->user_data_dir().AppendASCII("test_profile");
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
+    if (!base::PathExists(path))
+      ASSERT_TRUE(base::CreateDirectory(path));
+    other_profile =
+        Profile::CreateProfile(path, NULL, Profile::CREATE_MODE_SYNCHRONOUS);
+  }
   profile_manager->RegisterTestingProfile(other_profile, true, false);
   Browser* other_profile_browser = CreateBrowser(other_profile);
 
   ASSERT_TRUE(embedded_test_server()->Start());
   SetDownloadPathForProfile(browser()->profile());
   SetDownloadPathForProfile(other_profile);
   ASSERT_NO_FATAL_FAILURE(CreateStalledDownload(browser()));
   {
     RepeatedNotificationObserver close_observer(
         chrome::NOTIFICATION_BROWSER_CLOSED, 1);
@@ skipping 153 matching lines @@
 
   chrome::CloseAllBrowsers();
   EXPECT_FALSE(browser_shutdown::IsTryingToQuit());
   EXPECT_TRUE(BrowserList::GetInstance()->empty());
   EXPECT_TRUE(IsBackgroundModeSuspended());
 }
 
 INSTANTIATE_TEST_CASE_P(BrowserCloseManagerWithBackgroundModeBrowserTest,
                         BrowserCloseManagerWithBackgroundModeBrowserTest,
                         testing::Bool());