Move JavascriptTestObserver from chrome to content.

content/content_tests.gypi

 # Copyright (c) 2013 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.
 
 {
   'targets': [
     {
       'target_name': 'layouttest_support_content',
       'type': 'static_library',
       'conditions': [
@@ skipping 65 matching lines @@
         'public/test/browser_test_base.h',
         'public/test/browser_test.h',
         'public/test/browser_test_utils.cc',
         'public/test/browser_test_utils.h',
         'public/test/content_test_suite_base.cc',
         'public/test/content_test_suite_base.h',
         'public/test/download_test_observer.cc',
         'public/test/download_test_observer.h',
         'public/test/fake_speech_recognition_manager.cc',
         'public/test/fake_speech_recognition_manager.h',
+        'public/test/javascript_test_observer.cc',
+        'public/test/javascript_test_observer.h',
         'public/test/mock_blob_url_request_context.cc',
         'public/test/mock_blob_url_request_context.h',
         'public/test/mock_download_item.cc',
         'public/test/mock_download_item.h',
         'public/test/mock_download_manager.cc',
         'public/test/mock_download_manager.h',
         'public/test/mock_notification_observer.cc',
         'public/test/mock_notification_observer.h',
         'public/test/mock_render_process_host.cc',
         'public/test/mock_render_process_host.h',
@@ skipping 1731 matching lines @@
                   'files': ['<(PRODUCT_DIR)/libnpapi_test_plugin.so'],
                 },
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }