Initial fitness app

sky/sdk/example/fitness/lib/measurement.dart

Index: sky/sdk/example/fitness/lib/measurement.dart
diff --git a/tools/clang/blink_gc_plugin/tests/ref_ptr_to_gc_managed_class.cpp b/sky/sdk/example/fitness/lib/measurement.dart
similarity index 60%
copy from tools/clang/blink_gc_plugin/tests/ref_ptr_to_gc_managed_class.cpp
copy to sky/sdk/example/fitness/lib/measurement.dart
index e0a200fed9540f685a11d0e83fbeb2bd48e344c6..cc1986542cb70b6bbfc5ebc496e073d54a29fde5 100644
--- a/tools/clang/blink_gc_plugin/tests/ref_ptr_to_gc_managed_class.cpp
+++ b/sky/sdk/example/fitness/lib/measurement.dart
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ref_ptr_to_gc_managed_class.h"
-
-namespace blink {
-
-void HeapObject::trace(Visitor*) { }
+class Measurement {
+  final DateTime when;
+  final double weight;
 
+  Measurement({ this.when, this.weight });
 }
+