Remove PPB_Scrollbar_Dev and PPB_Widget_Dev from native client

ppapi/native_client/tests/ppapi_browser/ppb_scrollbar/ppapi_ppb_scrollbar.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.
-
-function setupTests(tester, plugin) {
-  // This function takes an array of messages and asserts that the nexe
-  // calls PostMessage with each of these messages, in order.
-  function expectMessages(test, plugin, messages) {
-    test.assert(messages.length > 0, 'Must provide at least one message');
-    var listener = test.wrap(function(message) {
-      plugin.removeEventListener('message', listener, false);
-      test.assertEqual(message.data, messages.shift());
-      if (messages.length == 0) {
-        test.pass();
-      } else {
-        plugin.addEventListener('message', listener, false);
-      }
-    });
-    plugin.addEventListener('message', listener, false);
-  }
-
-  function addTest(test_name, responses) {
-    if (responses === undefined) {
-      responses = [];
-    }
-    var expected_messages = [test_name + ':PASSED'];
-    expected_messages.concat(responses);
-    tester.addAsyncTest('PPB_Scrollbar::' + test_name, function(test) {
-      expectMessages(test, plugin, expected_messages);
-      plugin.postMessage(test_name)
-    });
-  }
-
-  addTest('TestCreate');
-  addTest('TestGetThickness');
-  addTest('TestValue');
-  addTest('TestSetDocumentSize');
-  addTest('TestSetTickMarks');
-  addTest('TestScrollBy');
-}