Collect tab timing information for use in telementry-based startup tests

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index ba0054d32ec2631571a31778a84a68665796b179..4deefc3584464b5bd9c8f5ef5712dc9b80d49871 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -86,6 +86,7 @@
 #include "content/browser/storage_partition_impl.h"
 #include "content/browser/speech/input_tag_speech_dispatcher_host.h"
 #include "content/browser/speech/speech_recognition_dispatcher_host.h"
+#include "content/browser/stats_collection_message_filter.h"
 #include "content/browser/tracing/trace_message_filter.h"
 #include "content/browser/webui/web_ui_controller_factory_registry.h"
 #include "content/browser/worker_host/worker_storage_partition.h"
@@ -609,6 +610,11 @@ void RenderProcessHostImpl::CreateMessageFilters() {
   channel_->AddFilter(new ProfilerMessageFilter(PROCESS_TYPE_RENDERER));
   channel_->AddFilter(new HistogramMessageFilter());
   channel_->AddFilter(new HyphenatorMessageFilter(this));
+
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDomAutomationController)) {
+    channel_->AddFilter(new StatsCollectionMessageFilter());
+  }
 }
 
 int RenderProcessHostImpl::GetNextRoutingID() {