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

chrome/browser/ui/startup/startup_browser_creator_corrupt_profiles_browsertest_win.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 <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/strings/string_util.h"
 #include "base/test/test_file_util.h"
+#include "base/threading/thread_restrictions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profile_window.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/user_manager.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/testing_browser_process.h"
 
@@ skipping 238 matching lines @@
 
 // LastUsedProfileFallbackToUserManager : If all last opened profiles are
 // missing, it should fall back to user manager. To open the user manager, both
 // the guest profile and the system profile must be creatable.
 IN_PROC_BROWSER_TEST_F(StartupBrowserCreatorCorruptProfileTest,
                        PRE_LastUsedProfileFallbackToUserManager) {
   CreateAndSwitchToProfile("Profile 1");
   CloseBrowsersSynchronouslyForProfileBasePath("Profile 1");
   CreateAndSwitchToProfile("Profile 2");
 
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   ASSERT_TRUE(base::CreateDirectory(ProfileManager::GetGuestProfilePath()));
   ASSERT_TRUE(base::CreateDirectory(ProfileManager::GetSystemProfilePath()));
 }
 
 bool StartupBrowserCreatorCorruptProfileTest::
     SetUpUserDataDirectoryForLastUsedProfileFallbackToUserManager() {
   return DeleteProfileData("Default") &&
          DeleteProfileData("Profile 2") &&
          RemoveCreateDirectoryPermissionForUserDataDirectory();
 }
 
 IN_PROC_BROWSER_TEST_F(StartupBrowserCreatorCorruptProfileTest,
                        LastUsedProfileFallbackToUserManager) {
   CheckBrowserWindows({});
   ExpectUserManagerToShow();
 }
 
 
 // CannotCreateSystemProfile : If the system profile cannot be created, the user
 // manager should not be shown. Fallback to any other profile.
 IN_PROC_BROWSER_TEST_F(StartupBrowserCreatorCorruptProfileTest,
                        PRE_CannotCreateSystemProfile) {
   CreateAndSwitchToProfile("Profile 1");
   CloseBrowsersSynchronouslyForProfileBasePath("Profile 1");
   CreateAndSwitchToProfile("Profile 2");
 
   // Create the guest profile path, but not the system profile one. This will
   // make it impossible to create the system profile once the permissions are
   // locked down during setup.
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   ASSERT_TRUE(base::CreateDirectory(ProfileManager::GetGuestProfilePath()));
 }
 
 bool StartupBrowserCreatorCorruptProfileTest::
     SetUpUserDataDirectoryForCannotCreateSystemProfile() {
   return DeleteProfileData("Default") &&
          DeleteProfileData("Profile 2") &&
          RemoveCreateDirectoryPermissionForUserDataDirectory();
 }
 
@@ skipping 80 matching lines @@
                        NoFallbackForUserSelectedProfile) {
   ADD_FAILURE() << "Test body is not expected to run.";
 }
 
 // DeletedProfileFallbackToUserManager : If the profile's entry in
 // ProfileAttributesStorage is missing, it means the profile is deleted. The
 // browser should not attempt to open the profile, but should show the user
 // manager instead.
 IN_PROC_BROWSER_TEST_F(StartupBrowserCreatorCorruptProfileTest,
                        PRE_DeletedProfileFallbackToUserManager) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   ASSERT_TRUE(base::CreateDirectory(ProfileManager::GetGuestProfilePath()));
   ASSERT_TRUE(base::CreateDirectory(ProfileManager::GetSystemProfilePath()));
 }
 
 bool StartupBrowserCreatorCorruptProfileTest::
     SetUpUserDataDirectoryForDeletedProfileFallbackToUserManager() {
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   // Simulate a deleted profile by not creating the profile at the first place.
   command_line->AppendSwitchASCII(switches::kProfileDirectory, "Not Found");
   return RemoveCreateDirectoryPermissionForUserDataDirectory();
 }
 
 IN_PROC_BROWSER_TEST_F(StartupBrowserCreatorCorruptProfileTest,
                        DeletedProfileFallbackToUserManager) {
   CheckBrowserWindows({});
   ExpectUserManagerToShow();
 }