[Mac] Implement the basic zoom bubble.

chrome/chrome_tests_unit.gypi

  # Copyright 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1230 matching lines @@
         'browser/ui/cocoa/bookmarks/bookmark_menu_bridge_unittest.mm',
         'browser/ui/cocoa/bookmarks/bookmark_menu_cocoa_controller_unittest.mm',
         'browser/ui/cocoa/bookmarks/bookmark_menu_unittest.mm',
         'browser/ui/cocoa/bookmarks/bookmark_model_observer_for_cocoa_unittest.mm',
         'browser/ui/cocoa/bookmarks/bookmark_name_folder_controller_unittest.mm',
         'browser/ui/cocoa/bookmarks/bookmark_tree_browser_cell_unittest.mm',
         'browser/ui/cocoa/browser/avatar_button_controller_unittest.mm',
         'browser/ui/cocoa/browser/avatar_menu_bubble_controller_unittest.mm',
         'browser/ui/cocoa/browser/edit_search_engine_cocoa_controller_unittest.mm',
         'browser/ui/cocoa/browser/password_generation_bubble_controller_unittest.mm',
+        'browser/ui/cocoa/browser/zoom_bubble_controller_unittest.mm',
         'browser/ui/cocoa/browser_window_cocoa_unittest.mm',
         'browser/ui/cocoa/browser_window_controller_unittest.mm',
         'browser/ui/cocoa/bubble_view_unittest.mm',
         'browser/ui/cocoa/chrome_browser_window_unittest.mm',
         'browser/ui/cocoa/chrome_event_processing_window_unittest.mm',
         'browser/ui/cocoa/chrome_to_mobile_bubble_controller_unittest.mm',
         'browser/ui/cocoa/clickhold_button_cell_unittest.mm',
         'browser/ui/cocoa/cocoa_profile_test.h',
         'browser/ui/cocoa/cocoa_profile_test.mm',
         'browser/ui/cocoa/cocoa_test_helper.h',
@@ skipping 1111 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }