Eliminate //chrome dependencies from MetricsServicesManager

chrome/browser/metrics/chrome_metrics_service_client.cc

Index: chrome/browser/metrics/chrome_metrics_service_client.cc
diff --git a/chrome/browser/metrics/chrome_metrics_service_client.cc b/chrome/browser/metrics/chrome_metrics_service_client.cc
index 433978a07b4fbc40a945dca78a9612d79dcf4db6..5ffa6f6cb5dcfa73050f0ddb857484b24d3a5291 100644
--- a/chrome/browser/metrics/chrome_metrics_service_client.cc
+++ b/chrome/browser/metrics/chrome_metrics_service_client.cc
@@ -179,6 +179,10 @@ void ChromeMetricsServiceClient::RegisterPrefs(PrefRegistrySimple* registry) {
 #endif  // defined(ENABLE_PLUGINS)
 }
 
+metrics::MetricsService* ChromeMetricsServiceClient::GetMetricsService() {
+  return metrics_service_.get();
+}
+
 void ChromeMetricsServiceClient::SetMetricsClientId(
     const std::string& client_id) {
   crash_keys::SetMetricsClientIdFromGUID(client_id);
@@ -276,7 +280,7 @@ base::string16 ChromeMetricsServiceClient::GetRegistryBackupKey() {
 #endif
 }
 
-void ChromeMetricsServiceClient::LogPluginLoadingError(
+void ChromeMetricsServiceClient::OnPluginLoadingError(
     const base::FilePath& plugin_path) {
 #if defined(ENABLE_PLUGINS)
   plugin_metrics_provider_->LogPluginLoadingError(plugin_path);