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

chrome/browser/extensions/app_process_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/command_line.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 286 matching lines @@
       browser()->profile())->extension_service();
   extensions::ProcessMap* process_map =
       extensions::ProcessMap::Get(browser()->profile());
 
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(embedded_test_server()->Start());
   GURL base_url = GetTestBaseURL("app_process");
 
   // Load an app as a bookmark app.
   std::string error;
-  scoped_refptr<const Extension> extension(extensions::file_util::LoadExtension(
-      test_data_dir_.AppendASCII("app_process"),
-      extensions::Manifest::UNPACKED,
-      Extension::FROM_BOOKMARK,
-      &error));
+  scoped_refptr<const Extension> extension;
+  {
+    base::ThreadRestrictions::ScopedAllowIO allow_io;
+    extension = extensions::file_util::LoadExtension(
+        test_data_dir_.AppendASCII("app_process"),
+        extensions::Manifest::UNPACKED, Extension::FROM_BOOKMARK, &error);
+  }
   service->OnExtensionInstalled(extension.get(),
                                 syncer::StringOrdinal::CreateInitialOrdinal(),
                                 extensions::kInstallFlagInstallImmediately);
   ASSERT_TRUE(extension.get());
   ASSERT_TRUE(extension->from_bookmark());
 
   // Test both opening a URL in a new tab, and opening a tab and then navigating
   // it.  Either way, bookmark app tabs should be considered normal processes
   // with no elevated privileges and no WebUI bindings.
   ui_test_utils::NavigateToURLWithDisposition(
@@ skipping 534 matching lines @@
   // Navigate the popup to another process outside the app.
   GURL non_app_url(base_url.Resolve("path3/empty.html"));
   ui_test_utils::NavigateToURL(active_browser_list->get(1), non_app_url);
   SiteInstance* new_instance = popup_contents->GetSiteInstance();
   EXPECT_NE(app_instance, new_instance);
 
   // It should still be in the same BrowsingInstance, allowing postMessage to
   // work.
   EXPECT_TRUE(app_instance->IsRelatedSiteInstance(new_instance));
 }