Allow compiling Android with notifications=1, add stubbed UI manager

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 3344cc26dd46f78ace33e767cf3e6a103386b81f..a3172005e7b3e6bb1d151ed29e7c864e5aefc22e 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -1386,6 +1386,8 @@
         'browser/notifications/notification_system_observer.h',
         'browser/notifications/notification_ui_manager.cc',
         'browser/notifications/notification_ui_manager.h',
+        'browser/notifications/notification_ui_manager_android.cc',
+        'browser/notifications/notification_ui_manager_android.h',
         'browser/notifications/sync_notifier/chrome_notifier_delegate.cc',
         'browser/notifications/sync_notifier/chrome_notifier_delegate.h',
         'browser/notifications/sync_notifier/chrome_notifier_service.cc',
@@ -3234,6 +3236,9 @@
             'browser/lifetime/application_lifetime_stub.cc',
             'browser/lifetime/browser_close_manager.cc',
             'browser/net/predictor_tab_helper.cc',
+            'browser/notifications/message_center_notification_manager.cc',
+            'browser/notifications/message_center_settings_controller.cc',
+            'browser/notifications/message_center_stats_collector.cc',
             'browser/parsers/metadata_parser_jpeg.cc',
             'browser/parsers/metadata_parser_jpeg_factory.cc',
             'browser/parsers/metadata_parser_manager.cc',
@@ -3274,6 +3279,7 @@
             ['exclude', '^browser/importer/'],
             ['exclude', '^browser/media_galleries/'],
             ['exclude', '^browser/net/firefox_*'],
+            ['exclude', '^browser/notifications/sync_notifier/'],
             ['exclude', '^browser/profile_resetter/'],
             ['exclude', '^browser/service/'],
             ['exclude', '^browser/sync/glue/app_'],