Added UMA statistics for change passwords in the Password Manager

components/password_manager/core/browser/password_manager_metrics_util.cc

Index: components/password_manager/core/browser/password_manager_metrics_util.cc
diff --git a/components/password_manager/core/browser/password_manager_metrics_util.cc b/components/password_manager/core/browser/password_manager_metrics_util.cc
index f2dfa455e19de06211f778756a53457b1e1fff1f..e5a1470df7283f697dedfabd509aab8c72bb4701 100644
--- a/components/password_manager/core/browser/password_manager_metrics_util.cc
+++ b/components/password_manager/core/browser/password_manager_metrics_util.cc
@@ -169,6 +169,12 @@ void LogPasswordGenerationSubmissionEvent(PasswordSubmissionEvent event) {
                             SUBMISSION_EVENT_ENUM_COUNT);
 }
 
+void LogUpdatePasswordSubmissionEvent(UpdatePasswordSubmissionEvent event) {
+  DCHECK_LE(event, UPDATE_PASSWORD_EVENT_COUNT);

[vasilii, 2015/08/21 15:58:34]

It can't be equal to UPDATE_PASSWORD_EVENT_COUNT.

[dvadym, 2015/08/21 16:25:28]

Done.

+  UMA_HISTOGRAM_ENUMERATION("PasswordManager.UpdatePasswordSubmissionEvent",
+                            event, UPDATE_PASSWORD_EVENT_COUNT);
+}
+
 }  // namespace metrics_util
 
 }  // namespace password_manager