Revert of Upgrade Blink to milliseconds-based last modified filetimes, part 3.

Source/modules/filesystem/DOMFileSystemBase.h

 /*
  * 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 32 matching lines @@
 
 namespace blink {
 
 class DirectoryReaderBase;
 class EntriesCallback;
 class EntryBase;
 class EntryCallback;
 class ErrorCallback;
 class File;
 class FileError;
-class FileMetadata;
+struct FileMetadata;
 class MetadataCallback;
 class ExecutionContext;
 class SecurityOrigin;
 class VoidCallback;
 
 // A common base class for DOMFileSystem and DOMFileSystemSync.
 class DOMFileSystemBase : public GarbageCollectedFinalized<DOMFileSystemBase> {
 public:
     enum SynchronousType {
         Synchronous,
@@ skipping 63 matching lines @@
     FileSystemType m_type;
     KURL m_filesystemRootURL;
     bool m_clonable;
 };
 
 inline bool operator==(const DOMFileSystemBase& a, const DOMFileSystemBase& b) { return a.name() == b.name() && a.type() == b.type() && a.rootURL() == b.rootURL(); }
 
 } // namespace blink
 
 #endif // DOMFileSystemBase_h