[IME] Removes the duplicated IMEs in chrome://settings/languages, and support async component IMEs …

chrome/test/data/extensions/api_test/input_method/background.js

 // Copyright (c) 2011 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 kNewInputMethod = "fr::fra";
 
 function setAndGetTest() {
   console.log('Changing input method to: ' + kNewInputMethod);
   chrome.test.sendMessage('setInputMethod:' + kNewInputMethod,
     function (response) {
       chrome.test.assertEq('done', response);
       console.log('Getting current input method.');
       chrome.inputMethodPrivate.get(function (inputMethod) {
-        chrome.test.assertEq(inputMethod, kNewInputMethod);
+        chrome.test.assertEq(kNewInputMethod, inputMethod);
         chrome.test.succeed();
       }
     );
   });
 }
 
 function setAndObserveTest() {
   console.log('Adding input method event listener.');
   chrome.inputMethodPrivate.onChanged.addListener(
     function(newInputMethod) {
       chrome.test.assertEq(kNewInputMethod, newInputMethod);
       chrome.test.succeed();
     }
   );
   console.log('Changing input method to: ' + kNewInputMethod);
   chrome.test.sendMessage('setInputMethod:' + kNewInputMethod,
     function (response) {
       chrome.test.assertEq('done', response);
     }
   );
 }
 
+chrome.test.sendMessage('ready');
 chrome.test.runTests([setAndGetTest, setAndObserveTest]);