Hook up simulator (if needed) when calling Dart code.

runtime/vm/unit_test.h

Index: runtime/vm/unit_test.h
===================================================================
--- runtime/vm/unit_test.h	(revision 18992)
+++ runtime/vm/unit_test.h	(working copy)
@@ -84,7 +84,7 @@
   }                                                                            \
   static void CodeGenTestRun##name(const Function& function) {                 \
     Object& result = Object::Handle();                                         \
-    result = DartEntry::InvokeStatic(function, Object::empty_array());         \
+    result = DartEntry::InvokeFunction(function, Object::empty_array());       \
     EXPECT(!result.IsError());                                                 \
     Instance& actual = Instance::Handle();                                     \
     actual ^= result.raw();                                                    \
@@ -122,7 +122,7 @@
   }                                                                            \
   static void CodeGenTestRun##name1(const Function& function) {                \
     Object& result = Object::Handle();                                         \
-    result = DartEntry::InvokeStatic(function, Object::empty_array());         \
+    result = DartEntry::InvokeFunction(function, Object::empty_array());       \
     EXPECT(!result.IsError());                                                 \
     Instance& actual = Instance::Handle();                                     \
     actual ^= result.raw();                                                    \