[UMA] Use proper C++ objects to serialize tracked_objects across process boundaries.

content/browser/browser_child_process_host_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/browser/browser_child_process_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/lazy_instance.h"
@@ skipping 72 matching lines @@
     : data_(type),
       delegate_(delegate),
 #if !defined(OS_WIN)
       ALLOW_THIS_IN_INITIALIZER_LIST(task_factory_(this)),
 #endif
       disconnect_was_alive_(false) {
   data_.id = ChildProcessHostImpl::GenerateChildProcessUniqueId();
 
   child_process_host_.reset(ChildProcessHost::Create(this));
   child_process_host_->AddFilter(new TraceMessageFilter);
-  child_process_host_->AddFilter(new ProfilerMessageFilter);
+  child_process_host_->AddFilter(new content::ProfilerMessageFilter(type));
 
   g_child_process_list.Get().push_back(this);
   content::GetContentClient()->browser()->BrowserChildProcessHostCreated(this);
 }
 
 BrowserChildProcessHostImpl::~BrowserChildProcessHostImpl() {
   g_child_process_list.Get().remove(this);
 }
 
 // static
@@ skipping 217 matching lines @@
 
 
 void BrowserChildProcessHostImpl::OnProcessLaunched() {
   if (!child_process_->GetHandle()) {
     delete delegate_;  // Will delete us
     return;
   }
   data_.handle = child_process_->GetHandle();
   delegate_->OnProcessLaunched();
 }