Remove ENABLE(FILE_SYSTEM) compile-time flag.

Source/WebCore/Modules/filesystem/WorkerContextFileSystem.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 10 matching lines @@
  * 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 "WorkerContextFileSystem.h"
 
-#if ENABLE(FILE_SYSTEM)
-
 #include "AsyncFileSystem.h"
 #include "DOMFileSystemBase.h"
 #include "DOMFileSystemSync.h"
 #include "DirectoryEntrySync.h"
 #include "ErrorCallback.h"
 #include "FileEntrySync.h"
 #include "FileError.h"
 #include "FileException.h"
 #include "FileSystemCallback.h"
 #include "FileSystemCallbacks.h"
@@ skipping 88 matching lines @@
     if (ec == FileException::TYPE_MISMATCH_ERR)
         return fileSystem->root()->getFile(filePath, Dictionary(), ec);
 
     return entry.release();
 }
 
 COMPILE_ASSERT(static_cast<int>(WorkerContextFileSystem::TEMPORARY) == static_cast<int>(FileSystemTypeTemporary), enum_mismatch);
 COMPILE_ASSERT(static_cast<int>(WorkerContextFileSystem::PERSISTENT) == static_cast<int>(FileSystemTypePersistent), enum_mismatch);
 
 } // namespace WebCore
-
-#endif // ENABLE(FILE_SYSTEM)