Histograms - Support histograms for Plugins, GPU

chrome/browser/metrics/metrics_service.cc

 // Copyright (c) 2012 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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It
@@ skipping 1065 matching lines @@
   DCHECK(waiting_for_asynchronus_reporting_step_);
 
   // Create a callback_task for OnHistogramSynchronizationDone.
   base::Closure callback = base::Bind(
       &MetricsService::OnHistogramSynchronizationDone,
       self_ptr_factory_.GetWeakPtr());
 
   base::StatisticsRecorder::CollectHistogramStats("Browser");
 
   // Set up the callback to task to call after we receive histograms from all
-  // renderer processes. Wait time specifies how long to wait before absolutely
-  // calling us back on the task.
-  HistogramSynchronizer::FetchRendererHistogramsAsynchronously(
+  // renderer/child processes. Wait time specifies how long to wait before
+  // absolutely calling us back on the task.
+  HistogramSynchronizer::FetchHistogramsAsynchronously(
       MessageLoop::current(), callback,
       base::TimeDelta::FromMilliseconds(kMaxHistogramGatheringWaitDuration));
 }
 
 void MetricsService::OnHistogramSynchronizationDone() {
   DCHECK(IsSingleThreaded());
   // This function should only be called as the callback from an ansynchronous
   // step.
   DCHECK(waiting_for_asynchronus_reporting_step_);
 
@@ skipping 722 matching lines @@
   if (local_state) {
     const PrefService::Preference* uma_pref =
         local_state->FindPreference(prefs::kMetricsReportingEnabled);
     if (uma_pref) {
       bool success = uma_pref->GetValue()->GetAsBoolean(&result);
       DCHECK(success);
     }
   }
   return result;
 }