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 164 matching lines @@
             'defines': [
               'GL_GLEXT_PROTOTYPES',
             ],
           },
           'dependencies': [
             '<(DEPTH)/build/linux/system.gyp:x11',
             '<(DEPTH)/build/linux/system.gyp:xcomposite',
             '<(DEPTH)/build/linux/system.gyp:xext',
             '<(DEPTH)/ui/events/platform/events_platform.gyp:events_platform',
             '<(DEPTH)/ui/gfx/x/gfx_x11.gyp:gfx_x11',
+            '<(DEPTH)/ui/platform_window/x11/x11_window.gyp:x11_window',
           ],
         }],
         ['OS=="win"', {
           'sources': [
             'angle_platform_impl.cc',
             'angle_platform_impl.h',
             'gl_bindings_autogen_wgl.cc',
             'gl_bindings_autogen_wgl.h',
             'gl_context_wgl.cc',
             'gl_context_wgl.h',
@@ skipping 121 matching lines @@
           ],
           'variables': {
             'jni_gen_package': 'ui/gl',
           },
           'includes': [ '../../build/jni_generator.gypi' ],
         },
       ],
     }],
   ],
 }