Cleaned up OpenGLUI samples and added Blasteroids.

samples/openglui/android-canvas-tests/android.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.
 
 {
   'conditions': [
     ['OS=="android"',
       {
         'targets': [
           {
-            'target_name': 'android_sample',
+            'target_name': 'android_app',
             'type': 'none',
             'dependencies': [
               'copy_extension',
               'copy_main',
               '../../../runtime/dart-runtime.gyp:android_embedder',
               'copy_embedder',
             ],
             'actions': [
               # TODO(gram) - this should have a debug and release version.
               {
                 'action_name': 'build_app',
                 'inputs': [
                   '<(PRODUCT_DIR)/lib.target/libandroid_embedder.so',
                   '../../../runtime/embedders/openglui/common/gl.dart',
-                  '../src/openglui_raytrace.dart',
                   '../src/openglui_canvas_tests.dart'
                 ],
                 'outputs': [
                   'bin/NativeActivity-debug.apk',
                 ],
                 'action': [ 'ant', 'debug' ]
               }
             ]
           },
           {
@@ skipping 16 matching lines @@
                 '../../../runtime/embedders/openglui/common/gl.dart'
               ],
             }],
           },
           {
             'target_name': 'copy_main',
             'type': 'none',
             'copies': [ {
               'destination': 'assets/dart',
               'files': [
-                '../src/openglui_raytrace.dart',
                 '../src/openglui_canvas_tests.dart'
               ],
             }],
           },
         ]
       }
     ]
   ]
 }