Refactored OpenGL embedder that works on Android, Mac or Linux.

dart.gyp

Index: dart.gyp
===================================================================
--- dart.gyp	(revision 16976)
+++ dart.gyp	(working copy)
@@ -122,12 +122,26 @@
               'samples/android_sample/android_sample.gyp:android_sample',
             ],
           },

[vsm, 2013/01/14 21:31:40]

Note, if you add an extra {} clause, it's the else clause.  You might hoist
sample_extension up here (basically if OS!="android").

[gram, 2013/01/16 01:49:16]

I saw that but I find it more readable expanded out.

-        ],
-         ['OS!="android"', {
+         ],
+         ['OS=="win"', {
             'dependencies': [
               'samples/sample_extension/sample_extension.gyp:sample_extension',
             ],
           },
+         ],
+         ['OS=="mac"', {

[vsm, 2013/01/14 21:31:40]

I see "and", but not "or" in the chrome gyp files.  You should be able to
combine this with the below as:
['OS!="win" and OS!="android"', { ...

[gram, 2013/01/16 01:49:16]

I used or elsewhere and it seemed to work so I'll try the same here.

+            'dependencies': [
+              'samples/sample_extension/sample_extension.gyp:sample_extension',
+              'samples/mobile_emulator_sample/mobile_emulator_sample.gyp:mobile_emulator_sample',
+            ],
+          },
+         ],
+         ['OS=="linux"', {
+            'dependencies': [
+              'samples/sample_extension/sample_extension.gyp:sample_extension',
+              'samples/mobile_emulator_sample/mobile_emulator_sample.gyp:mobile_emulator_sample',
+            ],
+          },
         ]
       ],
     },