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

chrome/test/ppapi/ppapi_test.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 "chrome/test/ppapi/ppapi_test.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/path_service.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 120 matching lines @@
 }
 
 void PPAPITestBase::SetUpOnMainThread() {
   // Always allow access to the PPAPI broker.
   HostContentSettingsMapFactory::GetForProfile(browser()->profile())
       ->SetDefaultContentSetting(CONTENT_SETTINGS_TYPE_PPAPI_BROKER,
                                  CONTENT_SETTING_ALLOW);
 }
 
 GURL PPAPITestBase::GetTestFileUrl(const std::string& test_case) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io_for_test_setup;
   base::FilePath test_path;
   EXPECT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &test_path));
   test_path = test_path.Append(FILE_PATH_LITERAL("ppapi"));
   test_path = test_path.Append(FILE_PATH_LITERAL("tests"));
   test_path = test_path.Append(FILE_PATH_LITERAL("test_case.html"));
 
   // Sanity check the file name.
   EXPECT_TRUE(base::PathExists(test_path));
 
   GURL test_url = net::FilePathToFileURL(test_path);
@@ skipping 264 matching lines @@
     const std::string& base,
     const std::string& test_case) {
   return base::StringPrintf("%smode=nacl_newlib&testcase=%s", base.c_str(),
                             test_case.c_str());
 }
 
 void PPAPIBrokerInfoBarTest::SetUpOnMainThread() {
   // The default content setting for the PPAPI broker is ASK. We purposefully
   // don't call PPAPITestBase::SetUpOnMainThread() to keep it that way.
 }