Add missing traces for Supplement<> classes

third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 177 matching lines @@
     }
     KURL storagePartition = KURL(KURL(), context->getSecurityOrigin()->toString());
     fileSystem->deleteFileSystem(storagePartition, static_cast<WebFileSystemType>(type), callbacks->release());
 }
 
 LocalFileSystem::LocalFileSystem(std::unique_ptr<FileSystemClient> client)
     : m_client(std::move(client))
 {
 }
 
+DEFINE_TRACE(LocalFileSystem)
+{
+    Supplement<LocalFrame>::trace(visitor);
+    Supplement<WorkerClients>::trace(visitor);
+}
+
 const char* LocalFileSystem::supplementName()
 {
     return "LocalFileSystem";
 }
 
 LocalFileSystem* LocalFileSystem::from(ExecutionContext& context)
 {
     if (context.isDocument())
         return static_cast<LocalFileSystem*>(Supplement<LocalFrame>::from(toDocument(context).frame(), supplementName()));
 
     WorkerClients* clients = toWorkerGlobalScope(context).clients();
     ASSERT(clients);
     return static_cast<LocalFileSystem*>(Supplement<WorkerClients>::from(clients, supplementName()));
 }
 
 void provideLocalFileSystemTo(LocalFrame& frame, std::unique_ptr<FileSystemClient> client)
 {
     frame.provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(std::move(client)));
 }
 
 void provideLocalFileSystemToWorker(WorkerClients* clients, std::unique_ptr<FileSystemClient> client)
 {
     clients->provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(std::move(client)));
 }
 
 } // namespace blink