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

chrome/browser/apps/guest_view/web_view_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 <queue>
 #include <set>
 #include <utility>
 
 #include "base/callback_helpers.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/guid.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/path_service.h"
 #include "base/process/process.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/chrome_content_browser_client.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/download/download_history.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/download/download_service.h"
@@ skipping 2519 matching lines @@
           << message_;
 }
 
 IN_PROC_BROWSER_TEST_P(WebViewTest, DownloadPermission) {
   ASSERT_TRUE(StartEmbeddedTestServer());  // For serving guest pages.
   content::WebContents* guest_web_contents =
       LoadGuest("/extensions/platform_apps/web_view/download/guest.html",
                 "web_view/download");
   ASSERT_TRUE(guest_web_contents);
 
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir temporary_download_dir;
   ASSERT_TRUE(temporary_download_dir.CreateUniqueTempDir());
   DownloadPrefs::FromBrowserContext(guest_web_contents->GetBrowserContext())
       ->SetDownloadPath(temporary_download_dir.GetPath());
 
   std::unique_ptr<content::DownloadTestObserver> completion_observer(
       new content::DownloadTestObserverTerminal(
           content::BrowserContext::GetDownloadManager(
               guest_web_contents->GetBrowserContext()),
           1, content::DownloadTestObserver::ON_DANGEROUS_DOWNLOAD_FAIL));
@@ skipping 137 matching lines @@
 
   embedded_test_server()->RegisterRequestHandler(
       base::Bind(&HandleDownloadRequestWithCookie, &status_codes));
   ASSERT_TRUE(StartEmbeddedTestServer());  // For serving guest pages.
   LoadAndLaunchPlatformApp("web_view/download_cookie_isolation",
                            "created-webviews");
 
   content::WebContents* web_contents = GetFirstAppWindowWebContents();
   ASSERT_TRUE(web_contents);
 
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir temporary_download_dir;
   ASSERT_TRUE(temporary_download_dir.CreateUniqueTempDir());
   DownloadPrefs::FromBrowserContext(web_contents->GetBrowserContext())
       ->SetDownloadPath(temporary_download_dir.GetPath());
 
   content::DownloadManager* download_manager =
       content::BrowserContext::GetDownloadManager(
           web_contents->GetBrowserContext());
 
   std::unique_ptr<content::DownloadTestObserver> interrupted_observer(
@@ skipping 65 matching lines @@
 
   embedded_test_server()->RegisterRequestHandler(
       base::Bind(&HandleDownloadRequestWithCookie, &status_codes));
   ASSERT_TRUE(StartEmbeddedTestServer());  // For serving guest pages.
   LoadAndLaunchPlatformApp("web_view/download_cookie_isolation",
                            "created-webviews");
 
   content::WebContents* web_contents = GetFirstAppWindowWebContents();
   ASSERT_TRUE(web_contents);
 
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir temporary_download_dir;
   ASSERT_TRUE(temporary_download_dir.CreateUniqueTempDir());
   DownloadPrefs::FromBrowserContext(web_contents->GetBrowserContext())
       ->SetDownloadPath(temporary_download_dir.GetPath());
 
   content::DownloadManager* download_manager =
       content::BrowserContext::GetDownloadManager(
           web_contents->GetBrowserContext());
 
   DownloadHistoryWaiter history_waiter(web_contents->GetBrowserContext());
@@ skipping 38 matching lines @@
       base::Bind(&HandleDownloadRequestWithCookie, &status_codes));
   ASSERT_TRUE(StartEmbeddedTestServer());  // For serving guest pages.
 
   content::BrowserContext* browser_context = profile();
   content::DownloadManager* download_manager =
       content::BrowserContext::GetDownloadManager(browser_context);
 
   DownloadHistoryWaiter history_waiter(browser_context);
   history_waiter.WaitForHistoryLoad();
 
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir temporary_download_dir;
   ASSERT_TRUE(temporary_download_dir.Set(
       DownloadPrefs::FromBrowserContext(browser_context)->DownloadPath()));
 
   content::DownloadManager::DownloadVector saved_downloads;
   download_manager->GetAllDownloads(&saved_downloads);
   ASSERT_EQ(2u, saved_downloads.size());
 
   content::DownloadManager::DownloadVector downloads;
   // We can't trivially resume the previous downloads because they are going to
@@ skipping 1260 matching lines @@
                        ClosingChromeSignInShouldNotCrash) {
   GURL signin_url{"chrome://chrome-signin"};
 
   AddTabAtIndex(0, signin_url, ui::PAGE_TRANSITION_TYPED);
   AddTabAtIndex(1, signin_url, ui::PAGE_TRANSITION_TYPED);
   WaitForWebViewInDom();
 
   chrome::CloseTab(browser());
 }
 #endif