Fix size problem spotted by sra@, where iae and ioore were always put in the codegen work list.

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

Index: sdk/lib/_internal/compiler/implementation/js_backend/backend.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/js_backend/backend.dart	(revision 18163)
+++ sdk/lib/_internal/compiler/implementation/js_backend/backend.dart	(working copy)
@@ -871,10 +871,12 @@
       addInterceptors(jsArrayClass, enqueuer);
       // The backend will try to optimize array access and use the
       // `ioore` and `iae` helpers directly.
-      enqueuer.registerStaticUse(
-          compiler.findHelper(const SourceString('ioore')));
-      enqueuer.registerStaticUse(
-          compiler.findHelper(const SourceString('iae')));
+      if (enqueuer.isResolutionQueue) {
+        enqueuer.registerStaticUse(
+            compiler.findHelper(const SourceString('ioore')));
+        enqueuer.registerStaticUse(
+            compiler.findHelper(const SourceString('iae')));
+      }
     } else if (cls == compiler.intClass) {
       addInterceptors(jsIntClass, enqueuer);
       addInterceptors(jsNumberClass, enqueuer);