Create isolate constructor dynamically.

lib/compiler/implementation/namer.dart

Index: lib/compiler/implementation/namer.dart
diff --git a/lib/compiler/implementation/namer.dart b/lib/compiler/implementation/namer.dart
index 81045b6647a2f01e80f038617e835ee1cc33bd09..2864e6435ed176216b0d8c79d3d792716e955a40 100644
--- a/lib/compiler/implementation/namer.dart
+++ b/lib/compiler/implementation/namer.dart
@@ -30,6 +30,7 @@ class Namer {
 
   final String CURRENT_ISOLATE = "\$";
   final String ISOLATE = "Isolate";
+  final String ISOLATE_PROPERTIES = "\$isolateProperties";
 
 
   String closureInvocationName(Selector selector) {
@@ -189,12 +190,16 @@ class Namer {
     }
   }
 
-  String isolateAccess(Element element) {
-    return "$CURRENT_ISOLATE.${getName(element)}";
+  String isolatePropertiesAccess(Element element) {
+    return "$ISOLATE.$ISOLATE_PROPERTIES.${getName(element)}";
+  }
+
+  String isolatePropertiesAccessForConstant(String constantName) {
+    return "$ISOLATE.$ISOLATE_PROPERTIES.$constantName";
   }
 
-  String isolatePropertyAccess(Element element) {
-    return "$ISOLATE.prototype.${getName(element)}";
+  String isolateAccess(Element element) {
+    return "$CURRENT_ISOLATE.${getName(element)}";
   }
 
   String isolateBailoutAccess(Element element) {