Implements It2MeBrowserTest CancelShare and VerifyAccessCodeNotReusable

remoting/webapp/browser_test/it2me_browser_test.js

Index: remoting/webapp/browser_test/it2me_browser_test.js
diff --git a/remoting/webapp/browser_test/it2me_browser_test.js b/remoting/webapp/browser_test/it2me_browser_test.js
index 6a809d383906b83edaf255c0440874f238b9b7bb..a524ecd3e21b50a4a67bf7a9731acee5b601e83f 100644
--- a/remoting/webapp/browser_test/it2me_browser_test.js
+++ b/remoting/webapp/browser_test/it2me_browser_test.js
@@ -97,7 +97,19 @@ browserTest.GetAccessCode.prototype.run = function() {
         Number.isInteger(numericAccessCode) && numericAccessCode > 0,
         "The access code should be a positive integer.");
     browserTest.pass();
-  }, function(/** * */reason) {
-    browserTest.fail(/** @type {Error} */(reason));
+  }).catch(function(/** Error */ reason) {
+    browserTest.fail(reason);
   });
 };
+
+/** @constructor */
+browserTest.CancelShare = function() {};
+
+browserTest.CancelShare.prototype.run = function() {
+  browserTest.clickOnControl('cancel-share-button');
+  browserTest.onUIMode(remoting.AppMode.HOST_SHARE_FINISHED).then(function() {
+    browserTest.pass();
+  }).catch(function(/** Error */ reason) {
+    browserTest.fail(reason);
+  });
+};