[Metrics] Move ExternalMetrics ownership to ChromeBrowserMainPartsChromeos

chrome/browser/metrics/metrics_service.cc

Index: chrome/browser/metrics/metrics_service.cc
diff --git a/chrome/browser/metrics/metrics_service.cc b/chrome/browser/metrics/metrics_service.cc
index 700cc8a7921359f9235943b64be4a360000ff83c..bf79722e6f2c447e9517af75bbad83d762369c14 100644
--- a/chrome/browser/metrics/metrics_service.cc
+++ b/chrome/browser/metrics/metrics_service.cc
@@ -226,7 +226,6 @@
 #endif
 
 #if defined(OS_CHROMEOS)
-#include "chrome/browser/chromeos/external_metrics.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chromeos/system/statistics_provider.h"
 #endif
@@ -1915,13 +1914,6 @@ bool MetricsService::IsPluginProcess(int process_type) {
           process_type == content::PROCESS_TYPE_PPAPI_BROKER);
 }
 
-#if defined(OS_CHROMEOS)
-void MetricsService::StartExternalMetrics() {
-  external_metrics_ = new chromeos::ExternalMetrics;
-  external_metrics_->Start();
-}
-#endif
-
 // static
 bool MetricsServiceHelper::IsMetricsReportingEnabled() {
   bool result = false;