Implementation for switching between recently used tabs using ctrl tilde or quoteleft.

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 1792 matching lines @@
         'browser/ui/omnibox/omnibox_view_unittest.cc',
         'browser/ui/panels/display_settings_provider_win_unittest.cc',
         'browser/ui/panels/panel_browser_window_cocoa_unittest.mm',
         'browser/ui/panels/panel_cocoa_unittest.mm',
         'browser/ui/panels/panel_mouse_watcher_unittest.cc',
         'browser/ui/search_engines/keyword_editor_controller_unittest.cc',
         'browser/ui/search/search_delegate_unittest.cc',
         'browser/ui/sync/one_click_signin_helper_unittest.cc',
         'browser/ui/tab_contents/tab_contents_iterator_unittest.cc',
         'browser/ui/tabs/dock_info_unittest.cc',
+        'browser/ui/tabs/mru_tab_controller_unittest.cc',
         'browser/ui/tabs/pinned_tab_codec_unittest.cc',
         'browser/ui/tabs/pinned_tab_service_unittest.cc',
         'browser/ui/tabs/pinned_tab_test_utils.cc',
         'browser/ui/tabs/tab_menu_model_unittest.cc',
         'browser/ui/tabs/tab_strip_model_unittest.cc',
         'browser/ui/tabs/tab_strip_selection_model_unittest.cc',
         'browser/ui/tabs/test_tab_strip_model_delegate.cc',
         'browser/ui/tabs/test_tab_strip_model_delegate.h',
         'browser/ui/tests/ui_gfx_image_unittest.cc',
         'browser/ui/tests/ui_gfx_image_unittest.mm',
@@ skipping 2866 matching lines @@
             'input_jars_paths': [
               '<(PRODUCT_DIR)/lib.java/chromium_base.jar',
              ],
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],  # 'conditions'
 }