Webapp changes to support third party authentication

remoting/webapp/main.html

Index: remoting/webapp/main.html
diff --git a/remoting/webapp/main.html b/remoting/webapp/main.html
index 6004b4bb73e66e32480370cdeed3603cc3d004b3..3e5460cdb2f1a0598b0385de149b64a3e34c9b79 100644
--- a/remoting/webapp/main.html
+++ b/remoting/webapp/main.html
@@ -45,6 +45,7 @@ found in the LICENSE file.
     <script src="stats_accumulator.js"></script>
     <script src="storage.js"></script>
     <script src="survey.js"></script>
+    <script src="third_party_auth.js"></script>
     <script src="toolbar.js"></script>
     <script src="ui_mode.js"></script>
     <script src="xhr.js"></script>
@@ -551,6 +552,19 @@ found in the LICENSE file.
           </div>
         </div> <!-- client.pin-prompt -->
 
+        <div data-ui-mode="home.client.third-party-auth" class="centered">
+          <div id="third-party-auth-message"
+               i18n-content="DESCRIPTION_THIRD_PARTY_AUTH"
+               class="message"></div>
+          <div>
+            <button id="third-party-auth-button"
+                    type="button"
+                    autofocus="autofocus"
+                    i18n-content="CONTINUE_BUTTON">
+            </button>
+          </div>
+        </div> <!-- third-party-auth-dialog -->
+
         <div data-ui-mode="home.client.connect-failed"
              class="message centered">
           <span id="connect-error-message" class="error-state"></span>