chrome.displaySource custom bindings

extensions/test/data/api_test/display_source/api/background.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var testGetAvailableSinks = function() {
   var callback = function(sinks) {
     chrome.test.assertEq(1, sinks.length);
     var sink = sinks[0];
     chrome.test.assertEq(1, sink.id);
     chrome.test.assertEq("Disconnected", sink.state);
@@ skipping 16 matching lines @@
 };
 
 var testRequestAuthentication = function() {
   var callback = function(auth_info) {
     chrome.test.assertEq("PBC", auth_info.method);
     chrome.test.succeed("RequestAuthentication succeded");
   };
   chrome.displaySource.requestAuthentication(1, callback);
 };
 
+var testStartSessionErrorReport = function() {
+  var callback = function() {
+    chrome.test.assertLastError('Invalid stream arguments');
+    chrome.test.succeed();
+  };
+  var session_info = { sinkId: 1, authenticationInfo: { method: "PBC" } };
+  chrome.displaySource.startSession(session_info, callback);
+};
+
+var testTerminateSessionErrorReport = function() {
+  var callback = function() {
+    chrome.test.assertLastError('Session not found');
+    chrome.test.succeed();
+  };
+  chrome.displaySource.terminateSession(1, callback);
+};
+
 chrome.test.runTests([testGetAvailableSinks,
                       testOnSinksUpdated,
-                      testRequestAuthentication]);
+                      testRequestAuthentication,
+                      testStartSessionErrorReport,
+                      testTerminateSessionErrorReport]);