Merge the openglui samples into one.

dart.gyp

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'compiler',
       'type': 'none',
       'dependencies': [
@@ skipping 98 matching lines @@
     {
       'target_name': 'api_docs',
       'type': 'none',
       'dependencies': [
         'utils/apidoc/apidoc.gyp:api_docs',
       ],
     },
     {
       'target_name': 'samples',
       'type': 'none',
+      'dependencies': [
+        'samples/openglui/openglui.gyp:openglui_sample',
+      ],
       'conditions': [
-        ['OS=="android"', {
-           'dependencies': [
-             'samples/android_sample/android_sample.gyp:android_sample',
-           ],
-          },
-        ],
-        ['OS=="win"', {
+        ['OS!="android"', {
            'dependencies': [
              'samples/sample_extension/sample_extension.gyp:sample_extension',
            ],
-          },
-        ],
-        ['OS=="mac" or OS=="linux"', {
-           'dependencies': [
-             'samples/sample_extension/sample_extension.gyp:sample_extension',
-           ],
           },
         ],
       ]
     },
     {
       'target_name': 'packages',
       'type': 'none',
       'dependencies': [
         'pkg/pkg.gyp:pkg_packages',
       ],
     },
   ],
 }