Remove custom getters for File.lastModified{Date}

Source/core/fileapi/File.cpp

 /*
  * Copyright (C) 2008 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 147 matching lines @@
     , m_hasBackingFile(true)
     , m_userVisibility(File::IsNotUserVisible)
     , m_name(decodeURLEscapeSequences(fileSystemURL.lastPathComponent()))
     , m_fileSystemURL(fileSystemURL)
     , m_snapshotSize(metadata.length)
     , m_snapshotModificationTime(metadata.modificationTime)
 {
     ScriptWrappable::init(this);
 }
 
-double File::lastModifiedDate() const
+double File::lastModifiedMS() const
 {
     if (hasValidSnapshotMetadata() && isValidFileTime(m_snapshotModificationTime))
         return m_snapshotModificationTime * msPerSecond;
 
     time_t modificationTime;
     if (hasBackingFile() && getFileModificationTime(m_path, modificationTime) && isValidFileTime(modificationTime))
         return modificationTime * msPerSecond;
 
     return currentTime() * msPerSecond;
 }
 
+long long File::lastModified() const
+{
+    double modifiedDate = lastModifiedMS();
+    if (!isValidFileTime(modifiedDate))
+        modifiedDate = currentTimeMS();
+
+    // lastModified returns a number, not a Date instance.
+    // http://dev.w3.org/2006/webapi/FileAPI/#file-attrs
+    return floor(modifiedDate);
+}
+
+double File::lastModifiedDate() const
+{
+    double modifiedDate = lastModifiedMS();
+    if (!isValidFileTime(modifiedDate))
+        modifiedDate = currentTimeMS();
+
+    // lastModifiedDate returns a Date instance.
+    // http://www.w3.org/TR/FileAPI/#file-attrs
+    return modifiedDate;
+}
+
 unsigned long long File::size() const
 {
     if (hasValidSnapshotMetadata())
         return m_snapshotSize;
 
     // FIXME: JavaScript cannot represent sizes as large as unsigned long long, we need to
     // come up with an exception to throw if file size is not representable.
     long long size;
     if (!hasBackingFile() || !getFileSize(m_path, size))
         return 0;
@@ skipping 80 matching lines @@
     captureSnapshot(size, modificationTime);
     if (!m_fileSystemURL.isEmpty()) {
         blobData.appendFileSystemURL(m_fileSystemURL, 0, size, modificationTime);
         return;
     }
     ASSERT(!m_path.isEmpty());
     blobData.appendFile(m_path, 0, size, modificationTime);
 }
 
 } // namespace blink