Fix webkitGetEntry for non-native files.

third_party/WebKit/Source/core/clipboard/DataObjectItem.h

 /*
  * Copyright (C) 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:
  *
  *     * 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 @@
 class Blob;
 
 class CORE_EXPORT DataObjectItem
     : public GarbageCollectedFinalized<DataObjectItem> {
  public:
   enum ItemKind { StringKind, FileKind };
 
   static DataObjectItem* createFromString(const String& type,
                                           const String& data);
   static DataObjectItem* createFromFile(File*);
+  static DataObjectItem* createFromFileEntry(File*, const String& fileSystemId);

[kinuko, 2016/12/12 08:03:35]

I would expect that it takes FileEntry for this method name. 
createFromFileInFileSystem or createFromFileWithFilesystemId?

[hirono, 2016/12/13 08:12:13]

Done.

   static DataObjectItem* createFromURL(const String& url, const String& title);
   static DataObjectItem* createFromHTML(const String& html,
                                         const KURL& baseURL);
   static DataObjectItem* createFromSharedBuffer(const String& filename,
                                                 PassRefPtr<SharedBuffer>);
   static DataObjectItem* createFromPasteboard(const String& type,
                                               uint64_t sequenceNumber);
 
   ItemKind kind() const { return m_kind; }
   String type() const { return m_type; }
   String getAsString() const;
   Blob* getAsFile() const;
 
   // Used to support legacy DataTransfer APIs and renderer->browser
   // serialization.
   PassRefPtr<SharedBuffer> sharedBuffer() const { return m_sharedBuffer; }
   String title() const { return m_title; }
   KURL baseURL() const { return m_baseURL; }
   bool isFilename() const;
 
+  bool hasFileSystemId() const;
+  String fileSystemId() const;
+
   DECLARE_TRACE();
 
  private:
   enum DataSource {
     PasteboardSource,
     InternalSource,
   };
 
   DataObjectItem(ItemKind, const String& type);
   DataObjectItem(ItemKind, const String& type, uint64_t sequenceNumber);
 
   DataSource m_source;
   ItemKind m_kind;
   String m_type;
 
   String m_data;
   Member<File> m_file;
   RefPtr<SharedBuffer> m_sharedBuffer;
   // Optional metadata. Currently used for URL, HTML, and dragging files in.
   String m_title;
   KURL m_baseURL;
 
   uint64_t m_sequenceNumber;  // Only valid when m_source == PasteboardSource
+  String m_fileSystemId;      // Only valid when m_file is backed by FileEntry.
 };
 
 }  // namespace blink
 
 #endif  // DataObjectItem_h