Add phone number sign-in

firebase-auth.html

@@ -231,7 +231,31 @@
         sendPasswordResetEmail: function(email) {
           return this._handleSignIn(this.auth.sendPasswordResetEmail(email));
         },
-
+
+        /**
+         * Authenticates a Firebase client using a phone number.
+         *
+         * @param  {!String} phoneNumber Phone number of the user.
+         * @return {Promise} Promise that handles success and failure.
+         */
+        signInWithPhoneNumber: function(phoneNumber) {
+          var appVerifier = new firebase.auth.RecaptchaVerifier(document.getElementById('recaptcha-container'));
+          return this._handleSignIn(firebase.auth().signInWithPhoneNumber(phoneNumber, appVerifier)
+            .then(function(confirmationResult) {
+              window.confirmationResult = confirmationResult;
+            }));
+        },
+
+        /**
+         * Confirms authentication code for phone number sign-in.
+         *
+         * @param  {!String} code One-time code contained in the SMS message.
+         * @return {Promise} Promise that handles success and failure.
+         */
+        confirmCode: function(code) {
+          return this._handleSignIn(window.confirmationResult.confirm(code));
+        },
+
         /**
          * Unauthenticates a Firebase client.
          *