Make selector registration in the resolver and code generator more explicit.

lib/compiler/implementation/elements/elements.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.
 
 #library('elements');
 
 #import('dart:uri');
 
 #import('../tree/tree.dart');
 #import('../scanner/scannerlib.dart');
@@ skipping 1268 matching lines @@
     return (element !== null)
            && element.isInstanceMember()
            && (element.kind === ElementKind.FIELD
                || element.kind === ElementKind.GETTER
                || element.kind === ElementKind.SETTER);
   }
 
   static bool isStaticOrTopLevel(Element element) {
     return (element != null)
            && !element.isInstanceMember()
+           && !element.isPrefix()
            && element.enclosingElement !== null
            && (element.enclosingElement.kind == ElementKind.CLASS ||
                element.enclosingElement.kind == ElementKind.COMPILATION_UNIT ||
                element.enclosingElement.kind == ElementKind.LIBRARY);
   }
 
   static bool isStaticOrTopLevelField(Element element) {
     return isStaticOrTopLevel(element)
            && (element.kind === ElementKind.FIELD
                || element.kind === ElementKind.GETTER
@@ skipping 152 matching lines @@
   Node parseNode(compiler) => cachedNode;
 
   String toString() => "${enclosingElement.toString()}.${name.slowToString()}";
 
   TypeVariableElement cloneTo(Element enclosing, DiagnosticListener listener) {
     TypeVariableElement result =
         new TypeVariableElement(name, enclosing, node, type, bound);
     return result;
   }
 }