Do not compile OpaqueBrowserFrameView and co on CrOS

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 2299 matching lines @@
         ['chromeos==1', {
           'sources!': [
             'browser/password_manager/native_backend_gnome_x_unittest.cc',
             'browser/password_manager/native_backend_kwallet_x_unittest.cc',
             'browser/policy/cloud/user_policy_signin_service_unittest.cc',
             'browser/profiles/profile_list_desktop_unittest.cc',
             'browser/safe_browsing/download_protection_service_unittest.cc',
             'browser/shell_integration_linux_unittest.cc',
             'browser/signin/signin_manager_unittest.cc',
             'browser/storage_monitor/storage_monitor_linux_unittest.cc',
+            'browser/ui/views/frame/opaque_browser_frame_view_layout_unittest.cc',
             'browser/ui/sync/one_click_signin_helper_unittest.cc',
             'browser/ui/sync/one_click_signin_sync_starter_unittest.cc',
           ],
         }, { # else: chromeos == 0
           'sources/': [
             ['exclude', '^browser/chromeos/'],
             ['exclude', '^browser/ui/webui/chromeos/imageburner/'],
             ['exclude', '^browser/ui/webui/chromeos/login'],
             ['exclude', '^browser/ui/webui/options/chromeos/'],
             ['exclude', '^browser/ui/webui/options/chromeos/'],
@@ skipping 581 matching lines @@
             'browser/ui/app_list/test/fake_profile_store.h',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
             'browser/ui/views/app_list/linux/app_list_linux_unittest.cc',
             'browser/ui/views/app_list/win/app_list_win_unittest.cc',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }