Remove all remaining traces of MessageLoopProxy.

chrome/browser/extensions/api/declarative/declarative_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 <memory>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 105 matching lines @@
             RulesRegistryService::kDefaultRulesRegistryID,
             extensions::declarative_webrequest_constants::kOnRequest);
 
     std::vector<linked_ptr<api::events::Rule>> rules;
     BrowserThread::PostTask(
         BrowserThread::IO,
         FROM_HERE,
         base::Bind(
             &RulesRegistry::GetAllRules, rules_registry, extension_id, &rules));
     scoped_refptr<base::ThreadTestHelper> io_helper(new base::ThreadTestHelper(
-        BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO).get()));
+        BrowserThread::GetTaskRunnerForThread(BrowserThread::IO).get()));
     EXPECT_TRUE(io_helper->Run());
     return rules.size();
   }
 };
 
 IN_PROC_BROWSER_TEST_F(DeclarativeApiTest, DeclarativeApi) {
   ASSERT_TRUE(RunExtensionTest("declarative/api")) << message_;
 
   // Check that uninstalling the extension has removed all rules.
   std::string extension_id = GetSingleLoadedExtension()->id();
@@ skipping 112 matching lines @@
 
   // 2. Uninstall the extension. Rules are gone and preferences should be empty.
   UninstallExtension(extension_id);
   ui_test_utils::NavigateToURL(browser(), GURL(kArbitraryUrl));
   EXPECT_NE(kTestTitle, GetTitle());
   EXPECT_EQ(0u, NumberOfRegisteredRules(extension_id));
   EXPECT_FALSE(extension_prefs->HasPrefForExtension(extension_id));
 }
 
 }  // namespace extensions