Bring the feedback button to the Mac sad tab

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.
 {
   'variables': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 1297 matching lines @@
       'browser/ui/cocoa/run_loop_testing_unittest.mm',
       'browser/ui/cocoa/screen_capture_notification_ui_cocoa_unittest.mm',
       'browser/ui/cocoa/spinner_view_unittest.mm',
       'browser/ui/cocoa/sprite_view_unittest.mm',
       'browser/ui/cocoa/status_bubble_mac_unittest.mm',
       'browser/ui/cocoa/status_icons/status_icon_mac_unittest.mm',
       'browser/ui/cocoa/styled_text_field_cell_unittest.mm',
       'browser/ui/cocoa/styled_text_field_test_helper.h',
       'browser/ui/cocoa/styled_text_field_test_helper.mm',
       'browser/ui/cocoa/styled_text_field_unittest.mm',
-      'browser/ui/cocoa/tab_contents/sad_tab_controller_unittest.mm',
-      'browser/ui/cocoa/tab_contents/sad_tab_view_cocoa_unittest.mm',
+      'browser/ui/cocoa/tab_contents/sad_tab_mac_unittest.mm',
       'browser/ui/cocoa/tabs/alert_indicator_button_cocoa_unittest.mm',
       'browser/ui/cocoa/tabs/tab_controller_unittest.mm',
       'browser/ui/cocoa/tabs/tab_strip_controller_unittest.mm',
       'browser/ui/cocoa/tabs/tab_strip_view_unittest.mm',
       'browser/ui/cocoa/tabs/tab_view_unittest.mm',
       'browser/ui/cocoa/toolbar/app_toolbar_button_cell_unittest.mm',
       'browser/ui/cocoa/toolbar/reload_button_unittest.mm',
       'browser/ui/cocoa/toolbar/toolbar_button_unittest.mm',
       'browser/ui/cocoa/toolbar/toolbar_controller_unittest.mm',
       'browser/ui/cocoa/toolbar/toolbar_view_unittest.mm',
@@ skipping 1682 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }