Change the return type of WTF::bind() to |OwnPtr<Function>|

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 104 matching lines @@
 }
 
 WebFileSystem* LocalFileSystem::fileSystem() const
 {
     Platform* platform = Platform::current();
     if (!platform)
         return nullptr;
     return Platform::current()->fileSystem();
 }
 
-void LocalFileSystem::requestFileSystemAccessInternal(ExecutionContext* context, const Closure& allowed, const Closure& denied)
+void LocalFileSystem::requestFileSystemAccessInternal(ExecutionContext* context, PassOwnPtr<Closure> allowed, PassOwnPtr<Closure> denied)
 {
     if (!client()) {
-        denied();
+        (*denied)();
         return;
     }
     if (!context->isDocument()) {
         if (!client()->requestFileSystemAccessSync(context)) {
-            denied();
+            (*denied)();
             return;
         }
-        allowed();
+        (*allowed)();
         return;
     }
     client()->requestFileSystemAccessAsync(context, PermissionCallbacks::create(allowed, denied));
 }
 
 void LocalFileSystem::fileSystemNotAvailable(
     PassRefPtrWillBeRawPtr<ExecutionContext> context,
     CallbackWrapper* callbacks)
 {
     context->postTask(createCrossThreadTask(&reportFailure, callbacks->release(), FileError::ABORT_ERR));
@@ skipping 68 matching lines @@
 {
     frame.provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 }
 
 void provideLocalFileSystemToWorker(WorkerClients* clients, PassOwnPtr<FileSystemClient> client)
 {
     clients->provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 }
 
 } // namespace blink