New Profile metric for Auth Errors.

components/signin/core/browser/signin_error_controller.cc

Index: components/signin/core/browser/signin_error_controller.cc
diff --git a/components/signin/core/browser/signin_error_controller.cc b/components/signin/core/browser/signin_error_controller.cc
index eb680105d10cb8a2674404d1a71b543ac518a3aa..b145cf9528ae7222e4cd2bfd080b66ee530f44f7 100644
--- a/components/signin/core/browser/signin_error_controller.cc
+++ b/components/signin/core/browser/signin_error_controller.cc
@@ -4,6 +4,9 @@
 
 #include "components/signin/core/browser/signin_error_controller.h"
 
+#include "components/signin/core/browser/signin_client.h"
+#include "components/signin/core/browser/signin_metrics.h"
+
 namespace {
 
 typedef std::set<const SigninErrorController::AuthStatusProvider*>
@@ -17,8 +20,9 @@ SigninErrorController::AuthStatusProvider::AuthStatusProvider() {
 SigninErrorController::AuthStatusProvider::~AuthStatusProvider() {
 }
 
-SigninErrorController::SigninErrorController()
+SigninErrorController::SigninErrorController(SigninClient* signin_client)
     : auth_error_(GoogleServiceAuthError::AuthErrorNone()) {
+  AddObserver(signin_client);
 }
 
 SigninErrorController::~SigninErrorController() {
@@ -92,6 +96,7 @@ void SigninErrorController::AuthStatusChanged() {
   }
 
   if (error_changed) {
+    signin_metrics::LogAuthError(auth_error_.state());
     FOR_EACH_OBSERVER(Observer, observer_list_, OnErrorChanged());
   }
 }