Report the Auth method for me2me connections.

remoting/webapp/base/js/session_logger.js

Index: remoting/webapp/base/js/session_logger.js
diff --git a/remoting/webapp/base/js/session_logger.js b/remoting/webapp/base/js/session_logger.js
index 5e04be83954829a6972d929026f84d727c58456c..be7c6dc8d001e7762d023c75e5bbfa9340af2154 100644
--- a/remoting/webapp/base/js/session_logger.js
+++ b/remoting/webapp/base/js/session_logger.js
@@ -51,6 +51,8 @@ remoting.SessionLogger = function(role, writeLogEntry) {
   this.hostStatusUpdateElapsedTime_;
   /** @private */
   this.mode_ = remoting.ChromotingEvent.Mode.ME2ME;
+  /** @private {remoting.ChromotingEvent.AuthMethod} */
+  this.authMethod_;
 
   this.setSessionId_();
 };
@@ -99,6 +101,11 @@ remoting.SessionLogger.prototype.setLogEntryMode = function(mode) {
 };
 
 /** @override {remoting.Logger} */
+remoting.SessionLogger.prototype.setAuthMethod = function(authMethod) {
+  this.authMethod_ = authMethod;
+};
+
+/** @override {remoting.Logger} */
 remoting.SessionLogger.prototype.getSessionId = function() {
   return this.sessionId_;
 };
@@ -260,6 +267,9 @@ remoting.SessionLogger.prototype.fillEvent_ = function(entry) {
   if (this.hostStatusUpdateElapsedTime_ != undefined) {
     entry.host_status_update_elapsed_time = this.hostStatusUpdateElapsedTime_;
   }
+  if (this.authMethod_ != undefined) {
+    entry.auth_method = this.authMethod_;
+  }
   entry.host_version = this.hostVersion_;
   entry.host_os = this.hostOS_;
   entry.host_os_version = this.hostOSVersion_;