Add NativeEnqueuer to work with the Enqueuer.

sdk/lib/_internal/compiler/implementation/resolution/members.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of resolution;
 
 abstract class TreeElements {
   Element operator[](Node node);
   Selector getSelector(Send send);
   DartType getType(Node node);
@@ skipping 1743 matching lines @@
         // with the same arguments.
         Selector call = new Selector.callClosureFrom(selector);
         world.registerDynamicInvocation(call.name, call);
       } else if (target.impliesType()) {
         // We call 'call()' on a Type instance returned from the reference to a
         // class or typedef literal. We do not need to register this call as a
         // dynamic invocation, because we statically know what the target is.
       } else if (!selector.applies(target, compiler)) {
         warnArgumentMismatch(node, target);
       }
+
+      if (target != null &&
+          target.kind == ElementKind.FOREIGN &&
+          selector.name == const SourceString('JS')) {
+        world.nativeEnqueuer.registerJsCall(node, this);
+      }
     }
 
     // TODO(ngeoffray): Warn if target is null and the send is
     // unqualified.
     useElement(node, target);
     registerSend(selector, target);
     return node.isPropertyAccess ? target : null;
   }
 
   void warnArgumentMismatch(Send node, Element target) {
     // TODO(karlklose): we can be more precise about the reason of the
     // mismatch.
     warning(node.argumentsNode, MessageKind.INVALID_ARGUMENTS,
             [target.name]);
   }
 
+  /// Callback for native enqueuer to parse a type.  Returns [:null:] on error.
+  DartType resolveTypeFromString(String typeName) {
+    Element element = scope.lookup(new SourceString(typeName));
+    if (element == null) return null;
+    if (element is! ClassElement) return null;
+    element.ensureResolved(compiler);
+    return element.computeType(compiler);
+  }
+
   visitSendSet(SendSet node) {
     Element target = resolveSend(node);
     Element setter = target;
     Element getter = target;
     SourceString operatorName = node.assignmentOperator.source;
     String source = operatorName.stringValue;
     bool isComplex = !identical(source, '=');
     if (!Elements.isUnresolved(target)
         && target.kind == ElementKind.ABSTRACT_FIELD) {
       AbstractFieldElement field = target;
@@ skipping 1309 matching lines @@
     return e;
   }
 
   /// Assumed to be called by [resolveRedirectingFactory].
   Element visitReturn(Return node) {
     Node expression = node.expression;
     return finishConstructorReference(visit(expression),
                                       expression, expression);
   }
 }