Remove ENABLE(FILE_SYSTEM) compile-time flag.

Source/WebCore/platform/AsyncFileSystem.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 "AsyncFileSystem.h"
 
-#if ENABLE(FILE_SYSTEM)
-
 #include "AsyncFileSystemCallbacks.h"
 #include "ExceptionCode.h"
 #include "NotImplemented.h"
 
 namespace WebCore {
 
 #if !PLATFORM(CHROMIUM) && !PLATFORM(GTK) && !PLATFORM(BLACKBERRY)
 bool AsyncFileSystem::isAvailable()
 {
     notImplemented();
     return false;
 }
 
 void AsyncFileSystem::openFileSystem(const String& basePath, const String& storageIdentifier, FileSystemType, bool, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
 {
     notImplemented();
     callbacks->didFail(NOT_SUPPORTED_ERR);
 }
 
 void AsyncFileSystem::deleteFileSystem(const String& basePath, const String& storageIdentifier, FileSystemType type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
 {
     notImplemented();
     callbacks->didFail(NOT_SUPPORTED_ERR);
 }
 #endif
 
 } // namespace
-
-#endif // ENABLE(FILE_SYSTEM)