Enable SiteIsolationExtensions trial for developers.

chrome/browser/extensions/extension_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 "chrome/browser/extensions/extension_apitest.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/base_switches.h"
@@ skipping 133 matching lines @@
   embedded_test_server()->RegisterRequestHandler(
       base::Bind(&HandleEchoHeaderRequest));
   embedded_test_server()->RegisterRequestHandler(
       base::Bind(&HandleSetCookieRequest));
   embedded_test_server()->RegisterRequestHandler(
       base::Bind(&HandleSetHeaderRequest));
 }
 
 ExtensionApiTest::~ExtensionApiTest() {}
 
-void ExtensionApiTest::SetUpInProcessBrowserTestFixture() {
+void ExtensionApiTest::SetUpOnMainThread() {
+  ExtensionBrowserTest::SetUpOnMainThread();
   DCHECK(!test_config_.get()) << "Previous test did not clear config state.";
   test_config_.reset(new base::DictionaryValue());
   test_config_->SetString(kTestDataDirectory,
                           net::FilePathToFileURL(test_data_dir_).spec());
   test_config_->SetInteger(kTestWebSocketPort, 0);
   bool isolate_extensions = extensions::IsIsolateExtensionsEnabled();
   test_config_->SetBoolean(kIsolateExtensions, isolate_extensions);
   extensions::TestGetConfigFunction::set_test_config_state(
       test_config_.get());
 }
 
-void ExtensionApiTest::TearDownInProcessBrowserTestFixture() {
+void ExtensionApiTest::TearDownOnMainThread() {
+  ExtensionBrowserTest::TearDownOnMainThread();
   extensions::TestGetConfigFunction::set_test_config_state(NULL);
   test_config_.reset(NULL);
 }
 
 bool ExtensionApiTest::RunExtensionTest(const std::string& extension_name) {
   return RunExtensionTestImpl(
       extension_name, std::string(), NULL, kFlagEnableFileAccess);
 }
 
 bool ExtensionApiTest::RunExtensionTestWithArg(
@@ skipping 267 matching lines @@
 }
 
 void ExtensionApiTest::SetUpCommandLine(base::CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
   test_data_dir_ = test_data_dir_.AppendASCII("api_test");
   // Backgrounded renderer processes run at a lower priority, causing the
   // tests to take more time to complete. Disable backgrounding so that the
   // tests don't time out.
   command_line->AppendSwitch(switches::kDisableRendererBackgrounding);
 }