Convert startup_metric_utils to use mojo.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index c94455171d4cfd9eff982e11f99c6a0350ca119b..1d70ca9b92d5cd1308616d3c82e4d6dbb0e4046f 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -130,7 +130,7 @@
 #include "components/rappor/rappor_utils.h"
 #include "components/security_interstitials/core/ssl_error_ui.h"
 #include "components/signin/core/common/profile_management_switches.h"
-#include "components/startup_metric_utils/browser/startup_metric_message_filter.h"
+#include "components/startup_metric_utils/browser/startup_metric_host_impl.h"
 #include "components/translate/core/common/translate_switches.h"
 #include "components/url_formatter/url_fixer.h"
 #include "components/variations/variations_associated_data.h"
@@ -992,7 +992,6 @@ void ChromeContentBrowserClient::RenderProcessWillLaunch(
       DataReductionProxyChromeSettingsFactory::GetForBrowserContext(profile);
   host->AddFilter(new data_reduction_proxy::DataReductionProxyMessageFilter(
       data_reduction_proxy_settings));
-  host->AddFilter(new startup_metric_utils::StartupMetricMessageFilter());
 
   host->GetImmediateSender()->Send(new ChromeViewMsg_SetIsIncognitoProcess(
       profile->IsOffTheRecord()));
@@ -2727,6 +2726,12 @@ bool ChromeContentBrowserClient::ShouldUseWindowsPrefetchArgument() const {
 }
 #endif  // defined(OS_WIN)
 
+void ChromeContentBrowserClient::RegisterRenderProcessMojoServices(
+    content::ServiceRegistry* registry) {
+  registry->AddService(
+      base::Bind(&startup_metric_utils::StartupMetricHostImpl::Create));
+}
+
 void ChromeContentBrowserClient::RegisterFrameMojoShellServices(
     content::ServiceRegistry* registry,
     content::RenderFrameHost* render_frame_host) {