Move another block of extension tests to manifest_version 2.

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

-<script>
-  var kNewInputMethod = "ru::rus";
-
-  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.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.runTests([setAndGetTest, setAndObserveTest]);
-</script>
+<!--
+ * 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.
+-->
+<script src="background.js"></script>