Remove MessageLoop::current() from chrome_metrics_service_client.cc

chrome/browser/metrics/chrome_metrics_service_client.cc

 // Copyright 2014 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/metrics/chrome_metrics_service_client.h"
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/persistent_histogram_allocator.h"
 #include "base/path_service.h"
 #include "base/rand_util.h"
 #include "base/strings/string16.h"
 #include "base/threading/platform_thread.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/google/google_brand.h"
 #include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/browser/metrics/chrome_stability_metrics_provider.h"
 #include "chrome/browser/metrics/https_engagement_metrics_provider.h"
 #include "chrome/browser/metrics/metrics_reporting_state.h"
 #include "chrome/browser/metrics/sampling_metrics_provider.h"
 #include "chrome/browser/metrics/subprocess_metrics_provider.h"
@@ skipping 702 matching lines @@
   content::BrowserThread::PostTaskAndReply(
       content::BrowserThread::UI,
       FROM_HERE,
       base::Bind(&ChromeMetricsServiceClient::MergeHistogramDeltas,
                  weak_ptr_factory_.GetWeakPtr()),
       callback);
 
   // Set up the callback task to call after we receive histograms from all
   // child processes. |timeout| specifies how long to wait before absolutely
   // calling us back on the task.
-  content::FetchHistogramsAsynchronously(base::MessageLoop::current(), callback,
-                                         timeout);
+  content::FetchHistogramsAsynchronously(base::ThreadTaskRunnerHandle::Get(),
+                                         callback, timeout);
 }
 
 void ChromeMetricsServiceClient::OnHistogramSynchronizationDone() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   // This function should only be called as the callback from an ansynchronous
   // step.
   DCHECK(waiting_for_collect_final_metrics_step_);
   DCHECK_GT(num_async_histogram_fetches_in_progress_, 0);
 
@@ skipping 74 matching lines @@
   }
 }
 
 void ChromeMetricsServiceClient::OnURLOpenedFromOmnibox(OmniboxLog* log) {
   metrics_service_->OnApplicationNotIdle();
 }
 
 bool ChromeMetricsServiceClient::IsUMACellularUploadLogicEnabled() {
   return metrics::IsCellularLogicEnabled();
 }