Rotating spheres sample

samples/sample_extension/sample_extension.gyp

Index: samples/sample_extension/sample_extension.gyp
diff --git a/samples/sample_extension/sample_extension.gyp b/samples/sample_extension/sample_extension.gyp
index 6a5642d6c8e39b4ff25a1a541ee1fecfc974e779..f4fafbecf284ee392c3d18df2d4e828a7eb8ad95 100644
--- a/samples/sample_extension/sample_extension.gyp
+++ b/samples/sample_extension/sample_extension.gyp
@@ -7,9 +7,6 @@
     {
       'target_name': 'sample_extension',
       'type': 'shared_library',
-      'dependencies': [
-        '../../runtime/dart-runtime.gyp:dart',
-      ],
       'include_dirs': [
         '../../runtime/include',
       ],
@@ -21,6 +18,19 @@
         'DART_SHARED_LIB',
       ],
       'conditions': [
+        ['OS=="android"',
+          {
+            'dependencies': [
+              '../../runtime/dart-runtime.gyp:dart_so',
+            ],
+          },
+          # else OS != "android"
+          {
+            'dependencies': [
+              '../../runtime/dart-runtime.gyp:dart',
+            ],
+          }
+        ],
         ['OS=="win"', {
           'msvs_settings': {
             'VCLinkerTool': {