Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/extensions/api/gcd_private/privet_v3_context_getter_unittest.cc

 // Copyright 2015 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/api/gcd_private/privet_v3_context_getter.h"
 
 #include <stddef.h>
 
+#include "base/location.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 namespace {
 
 using content::BrowserThread;
 using net::EmbeddedTestServer;
 
 class PrivetV3ContextGetterTest : public testing::Test,
                                   public net::URLFetcherDelegate {
  protected:
   PrivetV3ContextGetterTest()
       : thread_bundle_(content::TestBrowserThreadBundle::REAL_IO_THREAD) {}
 
   void SetUp() override {
     context_getter_ = new extensions::PrivetV3ContextGetter(
         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
   }
 
   void OnURLFetchComplete(const net::URLFetcher* source) override {
     done_ = true;
     status_ = source->GetStatus();
 
-    base::MessageLoop::current()->PostTask(FROM_HERE, quit_);
+    base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, quit_);
   }
 
   void CreateServer(EmbeddedTestServer::Type type) {
     server_.reset(new EmbeddedTestServer(type));
     ASSERT_TRUE(server_->Start());
 
     base::FilePath test_data_dir;
     ASSERT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &test_data_dir));
     server_->ServeFilesFromDirectory(
         test_data_dir.Append(FILE_PATH_LITERAL("chrome/test/data")));
@@ skipping 70 matching lines @@
 
     CreateServer(EmbeddedTestServer::TYPE_HTTPS);
     SetFingerprint(GetServerFingerprint());
     EXPECT_EQ(net::URLRequestStatus::SUCCESS, Run());
   }
 }
 
 }  // namespace
 
 }  // namespace extensions