Record Chrome trace events in tcmalloc heap profiles

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>
@@ skipping 384 matching lines @@
 
   GetContentClient()->renderer()->RenderThreadStarted();
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableGpuBenchmarking))
       RegisterExtension(GpuBenchmarkingExtension::Get());
 
 #if defined(USE_TCMALLOC) && (defined(OS_LINUX) || defined(OS_ANDROID))
   if (command_line.HasSwitch(switches::kEnableMemoryBenchmarking))
     RegisterExtension(MemoryBenchmarkingExtension::Get());
+  trace_memory_observer_.reset(new base::debug::TraceMemoryTraceLogObserver(
+      GetMessageLoop()->message_loop_proxy()));
 #endif  // USE_TCMALLOC
 
   if (command_line.HasSwitch(switches::kEnableSkiaBenchmarking)) {
     LOG(WARNING) << "Enabling unsafe Skia benchmarking extension.";
     RegisterExtension(SkiaBenchmarkingExtension::Get());
   }
 
   context_lost_cb_.reset(new GpuVDAContextLostCallback());
 
   // Note that under Linux, the media library will normally already have
@@ skipping 16 matching lines @@
   // Wait for all databases to be closed.
   if (web_database_observer_impl_)
     web_database_observer_impl_->WaitForAllDatabasesToClose();
 
   // Shutdown in reverse of the initialization order.
   if (devtools_agent_message_filter_.get()) {
     RemoveFilter(devtools_agent_message_filter_.get());
     devtools_agent_message_filter_ = NULL;
   }
 
+#if defined(USE_TCMALLOC) && (defined(OS_LINUX) || defined(OS_ANDROID))
+  trace_memory_observer_.reset();
+#endif
+
   RemoveFilter(audio_input_message_filter_.get());
   audio_input_message_filter_ = NULL;
 
   RemoveFilter(audio_message_filter_.get());
   audio_message_filter_ = NULL;
 
   RemoveFilter(vc_manager_->video_capture_message_filter());
 
   RemoveFilter(db_message_filter_.get());
   db_message_filter_ = NULL;
@@ skipping 801 matching lines @@
 
 void RenderThreadImpl::SetFlingCurveParameters(
     const std::vector<float>& new_touchpad,
     const std::vector<float>& new_touchscreen) {
   webkit_platform_support_->SetFlingCurveParameters(new_touchpad,
                                                     new_touchscreen);
 
 }
 
 }  // namespace content