linux/gyp: Find missing symbols at build time, not runtime.

ash/ash.gyp

 # Copyright (c) 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': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
     # These files lists are shared with the GN build.
     'ash_sources': [
@@ skipping 879 matching lines @@
         '../ui/accelerometer/ui_accelerometer.gyp:ui_accelerometer',
         '../ui/accessibility/accessibility.gyp:accessibility',
         '../ui/app_list/app_list.gyp:app_list',
         '../ui/aura/aura.gyp:aura',
         '../ui/base/ui_base.gyp:ui_base',
         '../ui/compositor/compositor.gyp:compositor',
         '../ui/events/devices/events_devices.gyp:events_devices',
         '../ui/events/events.gyp:events',
         '../ui/events/events.gyp:events_base',
         '../ui/events/events.gyp:gesture_detection',
+        '../ui/events/platform/events_platform.gyp:events_platform',
         '../ui/gfx/gfx.gyp:gfx',
         '../ui/gfx/gfx.gyp:gfx_geometry',
         '../ui/keyboard/keyboard.gyp:keyboard',
         '../ui/message_center/message_center.gyp:message_center',
         '../ui/resources/ui_resources.gyp:ui_resources',
         '../ui/strings/ui_strings.gyp:ui_strings',
         '../ui/views/controls/webview/webview.gyp:webview',
         '../ui/views/views.gyp:views',
         '../ui/web_dialogs/web_dialogs.gyp:web_dialogs',
         '../ui/wm/wm.gyp:wm',
@@ skipping 12 matching lines @@
           'sources!': [
             # Note: sources list duplicated in GN build.
             "sticky_keys/sticky_keys_controller.cc",
             "sticky_keys/sticky_keys_controller.h",
           ],
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [ 4267, ],
         }],
         ['use_x11==1', {
           'dependencies': [
+            '../build/linux/system.gyp:x11',
             '../build/linux/system.gyp:xfixes',
+            '../ui/gfx/x/gfx_x11.gyp:gfx_x11',
            ],
         }],
         ['use_ozone==1', {
           'dependencies': [
             '../ui/ozone/ozone.gyp:ozone',
           ],
         }],
         ['chromeos==1', {
           'dependencies': [
             '../chromeos/chromeos.gyp:chromeos',
@@ skipping 343 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'ash_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }