Converted Observatory context-view element

runtime/observatory/lib/src/repositories/context.dart

Index: runtime/observatory/lib/src/repositories/context.dart
diff --git a/runtime/observatory/lib/src/repositories/ports.dart b/runtime/observatory/lib/src/repositories/context.dart
similarity index 61%
copy from runtime/observatory/lib/src/repositories/ports.dart
copy to runtime/observatory/lib/src/repositories/context.dart
index 324ef7430e85c4667428f13d05761c8fe933352d..a088428894d1e5a9b62338fb2e1778a071e4b34b 100644
--- a/runtime/observatory/lib/src/repositories/ports.dart
+++ b/runtime/observatory/lib/src/repositories/context.dart
@@ -4,11 +4,12 @@
 
 part of repositories;
 
-class PortsRepository implements M.PortsRepository {
-  Future<M.Ports> get(M.IsolateRef i) async {
+class ContextRepository extends M.ContextRepository {
+  ContextRepository();
+
+  Future<M.Context> get(M.IsolateRef i, String id) async{
     S.Isolate isolate = i as S.Isolate;
     assert(isolate != null);
-    final response = await isolate.invokeRpc('_getPorts', {});
-    return new S.Ports(response);
+    return (await isolate.getObject(id)) as S.Context;
   }
 }