Remove --enable-mac-views-app-list on Mac

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 2732 matching lines @@
         ['safe_browsing==1 and enable_extensions==1', {
           'sources': [
             'browser/extensions/blacklist_unittest.cc',
           ],
         }],
         ['enable_app_list==1', {
           'sources': [ '<@(chrome_unit_tests_app_list_sources)' ],
           'dependencies': [
             '../ui/app_list/app_list.gyp:app_list_test_support',
           ],
-        }],
-        ['enable_app_list==1 and chromeos==1', {
-          'sources': [ '<@(chrome_unit_tests_app_list_chromeos_sources)' ],
+          'conditions': [
+            ['chromeos==1', {
+              'sources': [ '<@(chrome_unit_tests_app_list_chromeos_sources)' ],
+            }],
+            ['OS=="mac"', {
+              'sources!': [
+                # This assumes the AppList is views-based.

[msw, 2016/05/05 01:51:07]

nit: "and Mac uses Cocoa"?

[tapted, 2016/05/05 02:53:42]

yep added "but Mac only links browser parts for the Cocoa implementation."

+                'browser/ui/app_list/app_list_shower_views_unittest.cc',
+              ],
+            }],
+          ],
         }],
         ['enable_app_list==1 and chromeos==1', {

[msw, 2016/05/05 01:51:07]

optional nit: merge this with your nested chromeos==1 block inside the
enable_app_list==1 block above or vice-versa.

[tapted, 2016/05/05 02:53:42]

Hum - I guess this was from a time when there was a distinct `enable_arc`, but
that's gone. app_list_chromeos_arc_sources should just be folded into
app_list_chromeos_sources. Merged the 'dependencies' bit. (Done.).

           'sources': [ '<@(chrome_unit_tests_app_list_chromeos_arc_sources)' ],
           'dependencies': [
             '../components/components.gyp:arc_test_support',
           ],
         }],
         ['chromeos==1', {
           'sources': [ '<@(chrome_unit_tests_arc_sources)' ],
           'dependencies': [
             '../components/components.gyp:arc_test_support',
           ],
@@ skipping 239 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }