mojo: Fix running view-manager related apptests on X11.

ui/gl/gl.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,
   },
 
   'targets': [
@@ skipping 292 matching lines @@
       ],
       'sources': [
         'test/gl_surface_test_support.cc',
         'test/gl_surface_test_support.h',
       ],
       'conditions': [
         ['use_x11==1', {
           'dependencies': [
             '../../build/linux/system.gyp:x11',
             '../gfx/x/gfx_x11.gyp:gfx_x11',
+            '../platform_window/x11/x11_window.gyp:x11_window',
           ],
         }],
       ],
     },
   ],
   'conditions': [
     ['OS=="android"' , {
       'targets': [
         {
           'target_name': 'surface_jni_headers',
@@ skipping 16 matching lines @@
           ],
           'variables': {
             'jni_gen_package': 'ui/gl',
           },
           'includes': [ '../../build/jni_generator.gypi' ],
         },
       ],
     }],
   ],
 }