Remove ENABLE(FILE_SYSTEM) compile-time flag.

Source/WebKit/chromium/src/WorkerAsyncFileWriterChromium.cpp

 /*
  * Copyright (C) 2010 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "WorkerAsyncFileWriterChromium.h"
 
-#if ENABLE(FILE_SYSTEM) && ENABLE(WORKERS)
+#if ENABLE(WORKERS)
 
 #include "AsyncFileSystem.h"
 #include "Blob.h"
 #include "ScriptExecutionContext.h"
 #include "WebFileWriter.h"
 #include "WebWorkerBase.h"
 #include "WorkerContext.h"
 #include "WorkerFileWriterCallbacksBridge.h"
 #include "WorkerLoaderProxy.h"
 #include "WorkerThread.h"
@@ skipping 33 matching lines @@
     m_bridge->postTruncateToMainThread(length);
 }
 
 void WorkerAsyncFileWriterChromium::abort()
 {
     m_bridge->postAbortToMainThread();
 }
 
 }
 
-#endif // ENABLE(FILE_SYSTEM)
+#endif // ENABLE(WORKERS)