[tracing] Send unique tracing process id for cross-process memory dumps identification.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 880 matching lines @@
           storage_partition_impl_->GetServiceWorkerContext()),
       message_port_message_filter_.get()));
 
 #if defined(ENABLE_WEBRTC)
   p2p_socket_dispatcher_host_ = new P2PSocketDispatcherHost(
       resource_context,
       browser_context->GetRequestContextForRenderProcess(GetID()));
   AddFilter(p2p_socket_dispatcher_host_.get());
 #endif
 
-  AddFilter(new TraceMessageFilter());
+  AddFilter(new TraceMessageFilter(GetID()));
   AddFilter(new ResolveProxyMsgHelper(
       browser_context->GetRequestContextForRenderProcess(GetID())));
   AddFilter(new QuotaDispatcherHost(
       GetID(),
       storage_partition_impl_->GetQuotaManager(),
       GetContentClient()->browser()->CreateQuotaPermissionContext()));
 
   notification_message_filter_ = new NotificationMessageFilter(
       GetID(),
       storage_partition_impl_->GetPlatformNotificationContext(),
@@ skipping 1600 matching lines @@
 void RenderProcessHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
 BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
   return bluetooth_dispatcher_host_.get();
 }
 
 }  // namespace content