Replace linked list of loaded libraries

runtime/vm/isolate.cc

 // 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.
 
 #include "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "lib/mirrors.h"
 #include "vm/compiler_stats.h"
@@ skipping 306 matching lines @@
       functions->Add(&function);
     }
   }
 }
 
 
 void Isolate::PrintInvokedFunctions() {
   ASSERT(this == Isolate::Current());
   Zone zone(this);
   HandleScope handle_scope(this);
+  const GrowableObjectArray& libraries =
+      GrowableObjectArray::Handle(object_store()->libraries());
   Library& library = Library::Handle();
-  library = object_store()->registered_libraries();
   GrowableArray<const Function*> invoked_functions;
-  while (!library.IsNull()) {
+  for (int i = 0; i < libraries.Length(); i++) {
+    library ^= libraries.At(i);
     Class& cls = Class::Handle();
     ClassDictionaryIterator iter(library);
     while (iter.HasNext()) {
       cls = iter.GetNextClass();
       AddFunctionsFromClass(cls, &invoked_functions);
     }
     Array& anon_classes = Array::Handle(library.raw_ptr()->anonymous_classes_);
     for (int i = 0; i < library.raw_ptr()->num_anonymous_; i++) {
       cls ^= anon_classes.At(i);
       AddFunctionsFromClass(cls, &invoked_functions);
     }
-    library = library.next_registered();
   }
   invoked_functions.Sort(MostUsedFunctionFirst);
   for (int i = 0; i < invoked_functions.length(); i++) {
     OS::Print("%10d x %s\n",
         invoked_functions[i]->usage_counter(),
         invoked_functions[i]->ToFullyQualifiedCString());
   }
 }
 
 
@@ skipping 103 matching lines @@
 
 
 void Isolate::VisitWeakPersistentHandles(HandleVisitor* visitor,
                                          bool visit_prologue_weak_handles) {
   if (api_state() != NULL) {
     api_state()->VisitWeakHandles(visitor, visit_prologue_weak_handles);
   }
 }
 
 }  // namespace dart