[chromedriver] Implement SwitchToFrame command.

chrome/chrome_tests.gypi

 # Copyright (c) 2012 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 697 matching lines @@
         'test/chromedriver/command.h',
         'test/chromedriver/command_executor.h',
         'test/chromedriver/command_executor_impl.cc',
         'test/chromedriver/command_executor_impl.h',
         'test/chromedriver/commands.cc',
         'test/chromedriver/commands.h',
         'test/chromedriver/devtools_client.h',
         'test/chromedriver/devtools_client_impl.cc',
         'test/chromedriver/devtools_client_impl.h',
         'test/chromedriver/devtools_event_listener.h',
+        'test/chromedriver/dom_tracker.h',
+        'test/chromedriver/dom_tracker.cc',
         'test/chromedriver/net/net_util.cc',
         'test/chromedriver/net/net_util.h',
         'test/chromedriver/net/sync_websocket.h',
         'test/chromedriver/net/sync_websocket_factory.cc',
         'test/chromedriver/net/sync_websocket_factory.h',
         'test/chromedriver/net/sync_websocket_impl.cc',
         'test/chromedriver/net/sync_websocket_impl.h',
         'test/chromedriver/net/url_request_context_getter.cc',
         'test/chromedriver/net/url_request_context_getter.h',
         'test/chromedriver/net/websocket.cc',
@@ skipping 40 matching lines @@
       'include_dirs': [
         '..,'
       ],
       'sources': [
         'test/chromedriver/chrome_finder_unittest.cc',
         'test/chromedriver/chrome_impl_unittest.cc',
         'test/chromedriver/chromedriver_unittest.cc',
         'test/chromedriver/command_executor_impl_unittest.cc',
         'test/chromedriver/commands_unittest.cc',
         'test/chromedriver/devtools_client_impl_unittest.cc',
+        'test/chromedriver/dom_tracker_unittest.cc',
         'test/chromedriver/fake_session_accessor.cc',
         'test/chromedriver/fake_session_accessor.h',
         'test/chromedriver/session_command_unittest.cc',
         'test/chromedriver/session_unittest.cc',
         'test/chromedriver/status_unittest.cc',
         'test/chromedriver/synchronized_map_unittest.cc',
       ],
     },
     # ChromeDriver2 tests that aren't run on the main buildbot. Available
     # as an optional test type on trybots.
@@ skipping 2064 matching lines @@
             'sync_integration_tests.isolate',
           ],
           'sources': [
             'sync_integration_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }