Histograms - Support histograms for Plugins, GPU

chrome/browser/metrics/tracking_synchronizer.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.
 
 #include "chrome/browser/metrics/tracking_synchronizer.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/process_util.h"
 #include "base/threading/thread.h"
@@ skipping 126 matching lines @@
 
     delete request;
     outstanding_requests_.Get().erase(it);
 
     UMA_HISTOGRAM_BOOLEAN("Profiling.ReceivedProcessGroupCount",
                           received_process_group_count);
     UMA_HISTOGRAM_COUNTS("Profiling.PendingProcessNotResponding",
                          unresponsive_processes);
   }
 
-
   // Delete all the entries in |outstanding_requests_| map.
   static void OnShutdown() {
     // Just in case we have any pending tasks, clear them out.
     while (!outstanding_requests_.Get().empty()) {
       RequestContextMap::iterator it = outstanding_requests_.Get().begin();
       delete it->second;
       outstanding_requests_.Get().erase(it);
     }
   }
 
@@ skipping 131 matching lines @@
 
   ++last_used_sequence_number_;
 
   // Watch out for wrapping to a negative number.
   if (last_used_sequence_number_ < 0)
     last_used_sequence_number_ = 1;
   return last_used_sequence_number_;
 }
 
 }  // namespace chrome_browser_metrics