Remove remaining calls to deprecated MessageLoop methods.

components/precache/core/precache_fetcher_unittest.cc

 // Copyright 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 "components/precache/core/precache_fetcher.h"
 
 #include <stdint.h>
 
 #include <cstring>
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/histogram_tester.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/precache/core/precache_switches.h"
 #include "components/precache/core/proto/precache.pb.h"
 #include "components/precache/core/proto/unfinished_work.pb.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/test_url_fetcher_factory.h"
@@ skipping 321 matching lines @@
   void CheckUntilParallelFetchesBeyondCapacity(
       const PrecacheFetcher* precache_fetcher) {
     if (!precache_fetcher->pool_.IsAvailable() &&
         !precache_fetcher->resource_urls_to_fetch_.empty() &&
         !precache_fetcher->manifest_urls_to_fetch_.empty()) {
       parallel_fetches_beyond_capacity_ = true;
       return;
     }
 
     // Check again after allowing the message loop to process some messages.
-    loop_.PostTask(
+    loop_.task_runner()->PostTask(
         FROM_HERE,
         base::Bind(
             &PrecacheFetcherTest::CheckUntilParallelFetchesBeyondCapacity,
             base::Unretained(this), precache_fetcher));
   }
 
   base::MessageLoopForUI loop_;
   scoped_refptr<net::TestURLRequestContextGetter> request_context_;
   TestURLFetcherCallback url_callback_;
   net::FakeURLFetcherFactory factory_;
@@ skipping 769 matching lines @@
 
   EXPECT_TRUE(precache_delegate_.was_on_done_called());
 
   // bad-manifest.com will have been completed.
   EXPECT_THAT(histogram.GetAllSamples("Precache.Fetch.PercentCompleted"),
               ElementsAre(base::Bucket(100, 1)));
   histogram.ExpectTotalCount("Precache.Fetch.TimeToComplete", 1);
 }
 
 }  // namespace precache