Chromecast: adds handler to log metrics from external processes.

chromecast/browser/metrics/cast_metrics_service_client.cc

Index: chromecast/browser/metrics/cast_metrics_service_client.cc
diff --git a/chromecast/browser/metrics/cast_metrics_service_client.cc b/chromecast/browser/metrics/cast_metrics_service_client.cc
index b6a6590f9e51c62b93513d584fe6cb4d5b6089aa..feb0fa6022ce0a5f08b29e00b7aadc4413b560e2 100644
--- a/chromecast/browser/metrics/cast_metrics_service_client.cc
+++ b/chromecast/browser/metrics/cast_metrics_service_client.cc
@@ -19,6 +19,10 @@
 #include "components/metrics/net/network_metrics_provider.h"
 #include "components/metrics/profiler/profiler_metrics_provider.h"
 
+#if defined(OS_LINUX)
+#include "chromecast/browser/metrics/external_metrics.h"
+#endif  // defined(OS_LINUX)
+
 namespace chromecast {
 namespace metrics {
 
@@ -152,9 +156,10 @@ CastMetricsServiceClient::CastMetricsServiceClient(
   // value.
   metrics_state_manager_->ForceClientIdCreation();
 
+  CastStabilityMetricsProvider* stability_provider =
+      new CastStabilityMetricsProvider(metrics_service_.get());
   metrics_service_->RegisterMetricsProvider(
-      scoped_ptr< ::metrics::MetricsProvider>(
-          new CastStabilityMetricsProvider));
+      scoped_ptr< ::metrics::MetricsProvider>(stability_provider));
   metrics_service_->RegisterMetricsProvider(
       scoped_ptr< ::metrics::MetricsProvider>(
           new ::metrics::GPUMetricsProvider));
@@ -170,6 +175,13 @@ CastMetricsServiceClient::CastMetricsServiceClient(
 
   if (IsReportingEnabled())
     metrics_service_->Start();
+
+  // Start external metrics collection, which feeds data from external
+  // processes into the main external metrics.
+#if defined(OS_LINUX)
+  external_metrics_.reset(new ExternalMetrics(stability_provider));
+  external_metrics_->Start();
+#endif  // defined(OS_LINUX)
 }
 
 CastMetricsServiceClient::~CastMetricsServiceClient() {