GN: Make chrome/{browser,common,renderer} compile on mac

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 5f5246cf37e0128bd639ba792dac155a89b445a1..d7a49d0a5a53bedd046095784d246e31a7203cc7 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -687,8 +687,6 @@
       'browser/media/cast_transport_host_filter.cc',
       'browser/media/cast_transport_host_filter.h',
       'browser/media/desktop_media_list.h',
-      'browser/media/desktop_media_list_ash.cc',
-      'browser/media/desktop_media_list_ash.h',
       'browser/media/desktop_media_picker.h',
       'browser/media/desktop_streams_registry.cc',
       'browser/media/desktop_streams_registry.h',
@@ -1232,10 +1230,6 @@
       'browser/signin/profile_oauth2_token_service_factory.h',
       'browser/signin/screenlock_bridge.cc',
       'browser/signin/screenlock_bridge.h',
-      'browser/signin/signin_error_notifier_ash.cc',
-      'browser/signin/signin_error_notifier_ash.h',
-      'browser/signin/signin_error_notifier_factory_ash.cc',
-      'browser/signin/signin_error_notifier_factory_ash.h',
       'browser/signin/signin_manager_factory.cc',
       'browser/signin/signin_manager_factory.h',
       'browser/signin/signin_names_io_thread.cc',
@@ -2269,6 +2263,12 @@
     ],
     # Cross-platform Ash sources.
     'chrome_browser_ash_sources': [
+      'browser/media/desktop_media_list_ash.cc',
+      'browser/media/desktop_media_list_ash.h',
+      'browser/signin/signin_error_notifier_ash.cc',
+      'browser/signin/signin_error_notifier_ash.h',
+      'browser/signin/signin_error_notifier_factory_ash.cc',
+      'browser/signin/signin_error_notifier_factory_ash.h',
       'browser/sync/sync_error_notifier_ash.cc',
       'browser/sync/sync_error_notifier_ash.h',
       'browser/sync/sync_error_notifier_factory_ash.cc',