Don't use 'new Function' for lazily initialized getter.

sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart

Index: sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart	(revision 15200)
+++ sdk/lib/_internal/compiler/implementation/js_backend/emitter.dart	(working copy)
@@ -329,7 +329,7 @@
   var sentinelUndefined = {};
   var sentinelInProgress = {};
   prototype[fieldName] = sentinelUndefined;
-  var getter = new Function("{ return $isolate." + fieldName + ";}");

[floitsch, 2012/11/21 16:58:13]

Unfortunately no.
I'm pretty sure this would make lazily initialized functions much slower.
You need to special case this in the csp-emitter.
2 alternatives: what you just did (but only when emitting csp), or (faster but
more code) passing in the getter as argument to the lazyInitializerFunction.

+  var getter = function() { return ${isolate}[fieldName]; };
   prototype[getterName] = function() {
     var result = $isolate[fieldName];
     try {