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

chrome/browser/extensions/api/commands/command_service_browsertest.cc

 // Copyright (c) 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 <utility>
 
 #include "base/memory/ptr_util.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/api/commands/command_service.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/common/pref_names.h"
 #include "components/prefs/scoped_user_pref_update.h"
 #include "content/public/test/browser_test.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/common/manifest_constants.h"
@@ skipping 20 matching lines @@
 #endif
 }
 
 }  // namespace
 
 namespace extensions {
 
 typedef ExtensionApiTest CommandServiceTest;
 
 IN_PROC_BROWSER_TEST_F(CommandServiceTest, RemoveShortcutSurvivesUpdate) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir scoped_temp_dir;
   EXPECT_TRUE(scoped_temp_dir.CreateUniqueTempDir());
   base::FilePath pem_path = test_data_dir_.
       AppendASCII("keybinding").AppendASCII("keybinding.pem");
   base::FilePath path_v1 =
       PackExtensionWithOptions(test_data_dir_.AppendASCII("keybinding")
                                    .AppendASCII("update")
                                    .AppendASCII("v1"),
                                scoped_temp_dir.GetPath().AppendASCII("v1.crx"),
                                pem_path, base::FilePath());
@@ skipping 358 matching lines @@
         &command_map));
 
     ASSERT_EQ(1u, command_map.count(kBasicNamedCommand));
     Command command = command_map[kBasicNamedCommand];
     EXPECT_EQ(kBasicNamedKeybinding,
               Command::AcceleratorToString(command.accelerator()));
   }
 }
 
 }  // namespace extensions