Added disabling EGL extensions support with --disable-extensions.

ui/gl/gl_tests.gyp

 # Copyright 2015 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 10 matching lines @@
         'gl.gyp:gl',
       ],
       'conditions': [
         ['OS == "android"', {
           'dependencies': [
             '<(DEPTH)/testing/android/native_test.gyp:native_test_native_code',
           ],
         }],
         ['OS in ("win", "android", "linux")', {
           'sources': [
+            'egl_api_unittest.cc',
             'test/egl_initialization_displays_unittest.cc',
           ],
-          'dependencies': [
-            '<(DEPTH)/ui/gl/gl.gyp:gl',
-          ],
           'include_dirs': [
             '<(DEPTH)/third_party/khronos',
           ],
         }],
       ],
     }
   ],
   'conditions': [
     ['OS == "android"', {
       'targets': [
@@ skipping 29 matching lines @@
               'dependencies': [
                 '<(DEPTH)/tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }