Implement GLX for Ozone 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 129 matching lines @@
             'gl_context_egl.h',
             'gl_egl_api_implementation.cc',
             'gl_egl_api_implementation.h',
             'gl_fence_egl.cc',
             'gl_fence_egl.h',
             'gl_image_egl.cc',
             'gl_image_egl.h',
             'gl_surface_egl.cc',
             'gl_surface_egl.h',
           ],
+          'all_dependent_settings': {
+            'defines': [
+              'USE_EGL',
+            ],
+          },
+         'defines': [
+            'USE_EGL',
+          ],
           'include_dirs': [
             '<(DEPTH)/third_party/khronos',
         ],
         }],
         ['OS in ("android", "linux")', {
           'sources': [
             'gl_implementation_osmesa.cc',
             'gl_implementation_osmesa.h',
           ],
         }],
@@ skipping 10 matching lines @@
             'gl_image_glx.cc',
             'gl_image_glx.h',
             'gl_surface_egl_x11.cc',
             'gl_surface_egl_x11.h',
             'gl_surface_glx.cc',
             'gl_surface_glx.h',
           ],
           'all_dependent_settings': {
             'defines': [
               'GL_GLEXT_PROTOTYPES',
+              'USE_GLX',
             ],
           },
+          'defines': [
+            'USE_GLX',
+          ],
           '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',
           ],
           'copies': [{
             'destination': '<(PRODUCT_DIR)',
             'files':
@@ skipping 172 matching lines @@
           ],
           'variables': {
             'jni_gen_package': 'ui/gl',
           },
           'includes': [ '../../build/jni_generator.gypi' ],
         },
       ],
     }],
   ],
 }