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

chrome/browser/extensions/api/page_capture/page_capture_apitest.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 "base/base_switches.h"
 #include "base/command_line.h"
+#include "base/threading/thread_restrictions.h"
 #include "chrome/browser/extensions/api/page_capture/page_capture_api.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/chrome_switches.h"
 #include "chromeos/login/login_state.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/extension_dialog_auto_confirm.h"
 #include "net/dns/mock_host_resolver.h"
 
 using extensions::PageCaptureSaveAsMHTMLFunction;
@@ skipping 30 matching lines @@
   ASSERT_TRUE(StartEmbeddedTestServer());
   PageCaptureSaveAsMHTMLDelegate delegate;
   ASSERT_TRUE(RunExtensionTest("page_capture")) << message_;
   // Make sure the MHTML data gets written to the temporary file.
   ASSERT_FALSE(delegate.temp_file_.empty());
   // Flush the message loops to make sure the delete happens.
   content::RunAllPendingInMessageLoop(content::BrowserThread::FILE);
   content::RunAllPendingInMessageLoop(content::BrowserThread::IO);
   // Make sure the temporary file is destroyed once the javascript side reads
   // the contents.
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   ASSERT_FALSE(base::PathExists(delegate.temp_file_));
 }
 
 #if defined(OS_CHROMEOS)
 IN_PROC_BROWSER_TEST_F(ExtensionPageCaptureApiTest,
                        PublicSessionRequestAllowed) {
   host_resolver()->AddRule("www.a.com", "127.0.0.1");
   ASSERT_TRUE(StartEmbeddedTestServer());
   PageCaptureSaveAsMHTMLDelegate delegate;
   // Set Public Session state.
   chromeos::LoginState::Get()->SetLoggedInState(
       chromeos::LoginState::LOGGED_IN_ACTIVE,
       chromeos::LoginState::LOGGED_IN_USER_PUBLIC_ACCOUNT);
   // Resolve Permission dialog with Allow.
   ScopedTestDialogAutoConfirm auto_confirm(ScopedTestDialogAutoConfirm::ACCEPT);
   ASSERT_TRUE(RunExtensionTest("page_capture")) << message_;
   ASSERT_FALSE(delegate.temp_file_.empty());
   content::RunAllPendingInMessageLoop(content::BrowserThread::FILE);
   content::RunAllPendingInMessageLoop(content::BrowserThread::IO);
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   ASSERT_FALSE(base::PathExists(delegate.temp_file_));
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionPageCaptureApiTest,
                        PublicSessionRequestDenied) {
   host_resolver()->AddRule("www.a.com", "127.0.0.1");
   ASSERT_TRUE(StartEmbeddedTestServer());
   // Set Public Session state.
   chromeos::LoginState::Get()->SetLoggedInState(
       chromeos::LoginState::LOGGED_IN_ACTIVE,
       chromeos::LoginState::LOGGED_IN_USER_PUBLIC_ACCOUNT);
   // Resolve Permission dialog with Deny.
   ScopedTestDialogAutoConfirm auto_confirm(ScopedTestDialogAutoConfirm::CANCEL);
   ASSERT_TRUE(RunExtensionTestWithArg("page_capture", "REQUEST_DENIED"))
       << message_;
 }
 #endif  // defined(OS_CHROMEOS)