Register the constructors of custom elements for deferred loading

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

 // Copyright (c) 2013, 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 js_backend;
 
 /**
  * Support for Custom Elements.
  *
  * The support for custom elements the compiler builds a table that maps the
@@ skipping 101 matching lines @@
   void onQueueEmpty(Enqueuer enqueuer) {
     joinFor(enqueuer).flush(enqueuer);
   }
 
   bool get needsTable => codegenJoin.demanded;
 
   bool needsClass(ClassElement classElement) =>
       codegenJoin.activeClasses.contains(classElement);
 
   List<Element> constructors(ClassElement classElement) =>
-      codegenJoin.escapingConstructors(classElement);
+      codegenJoin.computeEscapingConstructors(classElement);
 }
 
 
 class CustomElementsAnalysisJoin {
   final JavaScriptBackend backend;
   Compiler get compiler => backend.compiler;
 
   // Classes that are candidates for needing constructors.  Classes are moved to
   // [activeClasses] when we know they need constructors.
   final instantiatedClasses = new Set<ClassElement>();
@@ skipping 18 matching lines @@
     for (ClassElement classElement in instantiatedClasses) {
       bool isNative = classElement.isNative;
       bool isExtension =
           !isNative && Elements.isNativeOrExtendsNative(classElement);
       // Generate table entries for native classes that are explicitly named and
       // extensions that fix our criteria.
       if ((isNative && selectedClasses.contains(classElement)) ||
           (isExtension &&
               (allClassesSelected || selectedClasses.contains(classElement)))) {
         newActiveClasses.add(classElement);
-        escapingConstructors(classElement).forEach(enqueuer.registerStaticUse);
+        Iterable<Element> escapingConstructors =
+            computeEscapingConstructors(classElement);
+        escapingConstructors.forEach(enqueuer.registerStaticUse);
+        escapingConstructors
+            .forEach(compiler.globalDependencies.registerDependency);
         // Force the generaton of the type constant that is the key to an entry
         // in the generated table.
         Constant constant = makeTypeConstant(classElement);
         backend.registerCompileTimeConstant(
             constant, compiler.globalDependencies);
         backend.constants.addCompileTimeConstantForEmission(constant);
       }
     }
     activeClasses.addAll(newActiveClasses);
     instantiatedClasses.removeAll(newActiveClasses);
   }
 
   TypeConstant makeTypeConstant(ClassElement element) {
     DartType elementType = element.rawType;
     DartType constantType = backend.typeImplementation.rawType;
     return new TypeConstant(elementType, constantType);
   }
 
-  List<Element> escapingConstructors(ClassElement classElement) {
+  List<Element> computeEscapingConstructors(ClassElement classElement) {
     List<Element> result = <Element>[];
     // Only classes that extend native classes have constructors in the table.
     // We could refine this to classes that extend Element, but that would break
     // the tests and there is no sane reason to subclass other native classes.
     if (classElement.isNative) return result;
 
     selectGenerativeConstructors(ClassElement enclosing, Element member) {
       if (member.isGenerativeConstructor) {
         // Ignore constructors that cannot be called with zero arguments.
         FunctionElement constructor = member;
         FunctionSignature parameters = constructor.functionSignature;
         if (parameters.requiredParameterCount == 0) {
           result.add(member);
         }
       }
     }
     classElement.forEachMember(selectGenerativeConstructors,
         includeBackendMembers: false,
         includeSuperAndInjectedMembers: false);
     return result;
   }
 }