dart2js: switching isolate is not 'PURE'

pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart

Index: pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart
index 4bdc89fb78775e0f8b79477119de6212a2f52929..f2dc7815c19da719c7d526294189d67975d63f5b 100644
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart
@@ -2910,7 +2910,7 @@ class IrBuilderVisitor extends ast.Visitor<ir.Primitive>
         return irBuilder.buildForeignCode(
             js.js.parseForeignJS("$isolateName = #"),
             <ir.Primitive>[value],
-            NativeBehavior.PURE);
+            NativeBehavior.CHANGES_STATIC_PROPERTY);

[asgerf, 2016/01/20 19:09:55]

I would argue that this should use the "other" flag once we get that. Maybe we
should create an issue to track that.

 
       case 'JS_CALL_IN_ISOLATE':
         validateArgumentCount(exactly: 2);