Convert startup_metric_utils to use mojo.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index db0b6c430f9658e0f099ab6ab1562e59eb2c360b..17e90d7069a64544e5ab6138565af4d4929fb447 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -75,12 +75,13 @@
 #include "components/pdf/renderer/pepper_pdf_host.h"
 #include "components/plugins/renderer/mobile_youtube_plugin.h"
 #include "components/signin/core/common/profile_management_switches.h"
-#include "components/startup_metric_utils/common/startup_metric_messages.h"
+#include "components/startup_metric_utils/common/startup_metric.mojom.h"
 #include "components/version_info/version_info.h"
 #include "components/visitedlink/renderer/visitedlink_slave.h"
 #include "components/web_cache/renderer/web_cache_impl.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
+#include "content/public/common/service_registry.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/renderer/plugin_instance_throttler.h"
 #include "content/public/renderer/render_frame.h"
@@ -329,8 +330,12 @@ ChromeContentRendererClient::~ChromeContentRendererClient() {
 void ChromeContentRendererClient::RenderThreadStarted() {
   RenderThread* thread = RenderThread::Get();
 
-  thread->Send(new StartupMetricHostMsg_RecordRendererMainEntryTime(
-      main_entry_time_));
+  {
+    startup_metric_utils::mojom::StartupMetricHostPtr startup_metric_host;
+    thread->GetServiceRegistry()->ConnectToRemoteService(
+        mojo::GetProxy(&startup_metric_host));
+    startup_metric_host->RecordRendererMainEntryTime(main_entry_time_);
+  }
 
   chrome_observer_.reset(new ChromeRenderThreadObserver());
   web_cache_impl_.reset(new web_cache::WebCacheImpl());