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

chrome/browser/extensions/lazy_background_page_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 <stddef.h>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/path_service.h"
 #include "base/scoped_observer.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_restrictions.h"
 #include "build/build_config.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_action_test_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/lazy_background_page_test_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/location_bar/location_bar.h"
@@ skipping 288 matching lines @@
   EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id()));
 }
 
 // Tests that the lazy background page stays alive while a NaCl module exists in
 // its DOM.
 #if !defined(DISABLE_NACL)
 
 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, NaClInBackgroundPage) {
   {
     base::FilePath extdir;
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
     ASSERT_TRUE(PathService::Get(chrome::DIR_GEN_TEST_DATA, &extdir));
     extdir = extdir.AppendASCII("ppapi/tests/extensions/load_unload/newlib");
     LazyBackgroundObserver page_complete;
     ASSERT_TRUE(LoadExtension(extdir));
     page_complete.Wait();
   }
 
   // The NaCl module is loaded, and the Lazy Background Page stays alive.
   {
     ExtensionTestMessageListener nacl_module_loaded("nacl_module_loaded",
@@ skipping 16 matching lines @@
   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 }
 
 // Tests that the lazy background page shuts down when all visible views with
 // NaCl modules are closed.
 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, NaClInView) {
   // The extension is loaded and should've opened a new tab to an extension
   // page, and the Lazy Background Page stays alive.
   {
     base::FilePath extdir;
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
     ASSERT_TRUE(PathService::Get(chrome::DIR_GEN_TEST_DATA, &extdir));
     extdir = extdir.AppendASCII("ppapi/tests/extensions/popup/newlib");
     ResultCatcher catcher;
     const Extension* extension = LoadExtension(extdir);
     ASSERT_TRUE(extension);
     EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
     EXPECT_EQ(
         extension->GetResourceURL("popup.html").spec(),
         browser()->tab_strip_model()->GetActiveWebContents()->GetURL().spec());
     EXPECT_TRUE(IsBackgroundPageAlive(last_loaded_extension_id()));
@@ skipping 288 matching lines @@
 // See https://crbug.com/612668.
 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageIsolatedExtensionsApiTest,
                        EventProcessCleanup) {
   ASSERT_TRUE(LoadExtensionAndWait("event_page_with_web_iframe"));
 
   // Lazy Background Page doesn't exist anymore.
   EXPECT_FALSE(IsBackgroundPageAlive(last_loaded_extension_id()));
 }
 
 }  // namespace extensions