[Mac] Implement the system dictionary popup by implementing NSTextInput methods.

chrome/chrome_tests.gypi

 # 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.
 
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
@@ skipping 1523 matching lines @@
         'browser/ui/cocoa/location_bar/autocomplete_text_field_editor_unittest.mm',
         'browser/ui/cocoa/location_bar/autocomplete_text_field_unittest.mm',
         'browser/ui/cocoa/location_bar/autocomplete_text_field_unittest_helper.mm',
         'browser/ui/cocoa/location_bar/ev_bubble_decoration_unittest.mm',
         'browser/ui/cocoa/location_bar/image_decoration_unittest.mm',
         'browser/ui/cocoa/location_bar/instant_opt_in_controller_unittest.mm',
         'browser/ui/cocoa/location_bar/instant_opt_in_view_unittest.mm',
         'browser/ui/cocoa/location_bar/keyword_hint_decoration_unittest.mm',
         'browser/ui/cocoa/location_bar/omnibox_popup_view_unittest.mm',
         'browser/ui/cocoa/location_bar/selected_keyword_decoration_unittest.mm',
+        'browser/ui/cocoa/lookup_in_dictionary_unittest.mm',
         'browser/ui/cocoa/menu_button_unittest.mm',
         'browser/ui/cocoa/menu_controller_unittest.mm',
         'browser/ui/cocoa/notifications/balloon_controller_unittest.mm',
         'browser/ui/cocoa/nsimage_cache_unittest.mm',
         'browser/ui/cocoa/nsmenuitem_additions_unittest.mm',
         'browser/ui/cocoa/objc_method_swizzle_unittest.mm',
         'browser/ui/cocoa/options/content_exceptions_window_controller_unittest.mm',
         'browser/ui/cocoa/options/content_settings_dialog_controller_unittest.mm',
         'browser/ui/cocoa/options/cookies_window_controller_unittest.mm',
         'browser/ui/cocoa/options/custom_home_pages_model_unittest.mm',
@@ skipping 2087 matching lines @@
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }
 
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