Remove calls to deprecated MessageLoop methods in headless.

headless/public/util/generic_url_request_job_test.cc

 // Copyright 2016 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 "headless/public/util/generic_url_request_job.h"
 
 #include <memory>
 #include <string>
 #include <vector>
 
@@ skipping 128 matching lines @@
   }
 
   std::unique_ptr<net::URLRequest> CreateAndCompleteJob(
       const GURL& url,
       const std::string& json_reply) {
     json_fetch_reply_ = json_reply;
 
     std::unique_ptr<net::URLRequest> request(url_request_context_.CreateRequest(
         url, net::DEFAULT_PRIORITY, &request_delegate_));
     request->Start();
-    message_loop_.RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
     return request;
   }
 
  protected:
   base::MessageLoop message_loop_;
   ExpeditedDispatcher dispatcher_;
 
   net::URLRequestJobFactoryImpl url_request_job_factory_;
   net::URLRequestContext url_request_context_;
   MockCookieStore cookie_store_;
@@ skipping 12 matching lines @@
       " \"data\":\"Reply\","
       " \"headers\":{\"Content-Type\":\"text/plain\"}}";
 
   std::unique_ptr<net::URLRequest> request(url_request_context_.CreateRequest(
       GURL("https://example.com"), net::DEFAULT_PRIORITY, &request_delegate_));
   request->SetReferrer("https://referrer.example.com");
   request->SetExtraRequestHeaderByName("Extra-Header", "Value", true);
   request->SetExtraRequestHeaderByName("User-Agent", "TestBrowser", true);
   request->SetExtraRequestHeaderByName("Accept", "text/plain", true);
   request->Start();
-  message_loop_.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
 
   std::string expected_request_json =
       "{\"url\": \"https://example.com/\","
       " \"headers\": {"
       "   \"Accept\": \"text/plain\","
       "   \"Cookie\": \"\","
       "   \"Extra-Header\": \"Value\","
       "   \"Referer\": \"https://referrer.example.com/\","
       "   \"User-Agent\": \"TestBrowser\""
       " }"
@@ skipping 160 matching lines @@
   job_delegate_.SetShouldBlock(true);
 
   std::unique_ptr<net::URLRequest> request(
       CreateAndCompleteJob(GURL("https://example.com"), reply));
 
   EXPECT_EQ(net::URLRequestStatus::FAILED, request->status().status());
   EXPECT_EQ(net::ERR_FILE_NOT_FOUND, request->status().error());
 }
 
 }  // namespace headless