Pass the selected non-native file information from the browser to FileInputType.

public/web/WebFileChooserCompletion.h

 /*
  * Copyright (C) 2009 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 14 matching lines @@
  * 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.
  */
 
 #ifndef WebFileChooserCompletion_h
 #define WebFileChooserCompletion_h
 
 #include "../platform/WebString.h"
+#include "../platform/WebURL.h"
 
 namespace blink {
 
 template <typename T> class WebVector;
 
 // Gets called back when WebViewClient finished choosing a file.
 class WebFileChooserCompletion {
 public:
     struct SelectedFileInfo {
         // The actual path of the selected file.
         WebString path;
 
         // The display name of the file that is to be exposed as File.name in
         // the DOM layer. If it is empty the base part of the |path| is used.
         WebString displayName;
+
+        // File system URL.
+        WebURL fileSystemURL;
+
+        // Metadata of non-native file.
+        // 0 is Unit epoch, unit is sec.

[tkent, 2014/10/20 00:48:48]

Unit -> Unix?

[hirono, 2014/10/20 03:50:06]

Done.

+        double modificationTime;
+        long long length;
+        bool isDirectory;
+
+        SelectedFileInfo()
+            : modificationTime(0)
+            , length(0)
+            , isDirectory(false)
+        {
+        }
     };
 
     // Called with zero or more file names. Zero-lengthed vector means that
     // the user cancelled or that file choosing failed. The callback instance
     // is destroyed when this method is called.
     virtual void didChooseFile(const WebVector<WebString>& fileNames) = 0;
 
     // Called with zero or more files, given as a vector of SelectedFileInfo.
     // Zero-lengthed vector means that the user cancelled or that file
     // choosing failed. The callback instance is destroyed when this method
     // is called.
     // FIXME: Deprecate either one of the didChooseFile (and rename it to
     // didChooseFile*s*).
     virtual void didChooseFile(const WebVector<SelectedFileInfo>&) { }
 protected:
     virtual ~WebFileChooserCompletion() {}
 };
 
 } // namespace blink
 
 #endif