Histograms - Support histograms for Plugins, GPU

content/renderer/render_thread_impl.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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
+#include "base/metrics/histogram_sender.h"
 #include "base/metrics/stats_table.h"
 #include "base/path_service.h"
 #include "base/shared_memory.h"
 #include "base/string_number_conversions.h"  // Temporary
 #include "base/threading/thread_local.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "base/win/scoped_com_initializer.h"
 #include "content/common/appcache/appcache_dispatcher.h"
 #include "content/common/child_process_messages.h"
@@ skipping 356 matching lines @@
   DCHECK(!lang.empty() ||
       (!parsed_command_line.HasSwitch(switches::kRendererProcess) &&
        !parsed_command_line.HasSwitch(switches::kPluginProcess)));
   return lang;
 }
 
 IPC::SyncMessageFilter* RenderThreadImpl::GetSyncMessageFilter() {
   return sync_message_filter();
 }
 
+base::HistogramSender* RenderThreadImpl::GetHistogramSender() {
+  return reinterpret_cast<base::HistogramSender*>(
+      child_histogram_message_filter());
+}
+
 scoped_refptr<base::MessageLoopProxy>
     RenderThreadImpl::GetIOMessageLoopProxy() {
   return ChildProcess::current()->io_message_loop_proxy();
 }
 
 void RenderThreadImpl::AddRoute(int32 routing_id,
                                 IPC::Channel::Listener* listener) {
   widget_count_++;
   return ChildThread::AddRoute(routing_id, listener);
 }
@@ skipping 581 matching lines @@
 
 scoped_refptr<base::MessageLoopProxy>
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }