Fix host-checked + checked by registering when a class is being instantiated, not when being proces…

lib/compiler/implementation/compile_time_constants.dart

Index: lib/compiler/implementation/compile_time_constants.dart
===================================================================
--- lib/compiler/implementation/compile_time_constants.dart	(revision 11873)
+++ lib/compiler/implementation/compile_time_constants.dart	(working copy)
@@ -917,7 +917,7 @@
     classElement.ensureResolved(compiler);
     // TODO(floitsch): copy over the generic type.
     DartType type = new InterfaceType(classElement);
-    compiler.registerInstantiatedClass(classElement);
+    compiler.enqueuer.codegen.registerInstantiatedClass(classElement);
     Constant constant = new MapConstant(type, keysList, values, protoValue);
     compiler.constantHandler.registerCompileTimeConstant(constant);
     return constant;
@@ -1148,7 +1148,7 @@
     evaluator.evaluateConstructorFieldValues(arguments);
     List<Constant> jsNewArguments = evaluator.buildJsNewArguments(classElement);
 
-    compiler.registerInstantiatedClass(classElement);
+    compiler.enqueuer.codegen.registerInstantiatedClass(classElement);
     // TODO(floitsch): take generic types into account.
     DartType type = classElement.computeType(compiler);
     Constant constant = new ConstructedConstant(type, jsNewArguments);