Collect profiler stats from browser child processes.

content/common/child_process_host.cc

 // Copyright (c) 2011 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/common/child_process_host.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
+#include "base/tracked_objects.h"
 #include "content/common/child_process_info.h"
 #include "content/common/child_process_messages.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
 #include "ipc/ipc_logging.h"
 
 #if defined(OS_LINUX)
 #include "base/linux_util.h"
 #endif  // OS_LINUX
 
@@ skipping 254 matching lines @@
 
   for (size_t i = 0; i < filters_.size(); ++i)
     filters_[i]->OnFilterAdded(channel_.get());
 
   // Make sure these messages get sent first.
 #if defined(IPC_MESSAGE_LOG_ENABLED)
   bool enabled = IPC::Logging::GetInstance()->Enabled();
   Send(new ChildProcessMsg_SetIPCLoggingEnabled(enabled));
 #endif
 
+  bool enable = tracked_objects::ThreadData::tracking_status();

[jam, 2011/11/28 15:17:34]

instead of having this code here and in RenderProcessImpl, can't you just have
it in one place (ProfilerMessageFilter::OnChannelConnected)?

[ramant (doing other things), 2011/11/29 01:32:20]

Done.

+  Send(new ChildProcessMsg_SetProfilerStatus(enable));
+
   Send(new ChildProcessMsg_AskBeforeShutdown());
 
   opening_channel_ = true;
 
   return true;
 }
 
 bool ChildProcessHost::OnMessageReceived(const IPC::Message& msg) {
   return false;
 }
@@ skipping 126 matching lines @@
     uint32 buffer_size,
     base::SharedMemoryHandle* handle) {
   ChildProcessHost::OnAllocateSharedMemory(
       buffer_size, peer_handle_, handle);
 }
 
 void ChildProcessHost::ListenerHook::OnShutdownRequest() {
   if (host_->CanShutdown())
     host_->Send(new ChildProcessMsg_Shutdown());
 }