Revert "content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs"

content/browser/service_worker/service_worker_write_to_cache_job_unittest.cc

Index: content/browser/service_worker/service_worker_write_to_cache_job_unittest.cc
diff --git a/content/browser/service_worker/service_worker_write_to_cache_job_unittest.cc b/content/browser/service_worker/service_worker_write_to_cache_job_unittest.cc
index 7f6aabc69edbfd457726bb28dd1c8aeeaf7190c4..5fc56c4c48fbfd60703fa65fbc635784ab93fea8 100644
--- a/content/browser/service_worker/service_worker_write_to_cache_job_unittest.cc
+++ b/content/browser/service_worker/service_worker_write_to_cache_job_unittest.cc
@@ -2,10 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/location.h"
 #include "base/run_loop.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
 #include "content/browser/fileapi/mock_url_request_delegate.h"
 #include "content/browser/service_worker/embedded_worker_test_helper.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
@@ -98,9 +95,10 @@ class SSLCertificateErrorJob : public net::URLRequestTestJob {
                                auto_advance),
         weak_factory_(this) {}
   void Start() override {
-    base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(&SSLCertificateErrorJob::NotifyError,
-                              weak_factory_.GetWeakPtr()));
+    base::MessageLoop::current()->PostTask(
+        FROM_HERE,
+        base::Bind(&SSLCertificateErrorJob::NotifyError,
+                   weak_factory_.GetWeakPtr()));
   }
   void NotifyError() {
     net::SSLInfo info;