[Extensions Bindings] Fix content settings validation

chrome/test/data/extensions/api_test/native_bindings/extension/background.js

 // Copyright 2016 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.
 
 if (!chrome || !chrome.test)
   throw new Error('chrome.test is undefined');
 
 var portNumber;
 
 // This is a good end-to-end test for two reasons. The first is obvious - it
@@ skipping 278 matching lines @@
             chrome.test.assertTrue(!!details);
             chrome.test.assertEq('block', details.setting);
             resolve();
           });
         });
       });
     });
 
     // The fullscreen setting is deprecated.
     var fullscreen = chrome.contentSettings.fullscreen;
-    caught = false;
-    try {
-      // Trying to set the fullscreen setting to anything but 'allow' should
-      // fail.
-      fullscreen.set({primaryPattern: pattern, setting: 'block'});
-    } catch (e) {
-      caught = true;
-    }
-    chrome.test.assertTrue(caught);
-
     var deprecatedSettingTest = new Promise(function(resolve, reject) {
       fullscreen.get({primaryUrl: url}, (details) => {
         chrome.test.assertTrue(!!details);
         chrome.test.assertEq('allow', details.setting);
-        fullscreen.set({primaryPattern: pattern, setting: 'allow'}, () => {
+        // Trying to set the fullscreen setting to anything but 'allow' should
+        // silently fail.
+        fullscreen.set({primaryPattern: pattern, setting: 'block'}, () => {
           fullscreen.get({primaryUrl: url}, (details) => {
             chrome.test.assertTrue(!!details);
             chrome.test.assertEq('allow', details.setting);
             resolve();
           });
         });
       });
     });
 
     Promise.all([normalSettingTest, deprecatedSettingTest]).then(() => {
       chrome.test.succeed();
     });
   },
 ];
 
 chrome.test.getConfig(config => {
   chrome.test.assertTrue(!!config, 'config does not exist');
   chrome.test.assertTrue(!!config.testServer, 'testServer does not exist');
   portNumber = config.testServer.port;
   chrome.test.runTests(tests);
 });