Fix webkitGetEntry for non-native files.

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

Index: third_party/WebKit/Source/core/clipboard/DataObjectItem.h
diff --git a/third_party/WebKit/Source/core/clipboard/DataObjectItem.h b/third_party/WebKit/Source/core/clipboard/DataObjectItem.h
index 419fc126141ecc4e00f9b7d5300b5a215edcf029..123eb78b52026dabb34f0a8967e912da1934cbbc 100644
--- a/third_party/WebKit/Source/core/clipboard/DataObjectItem.h
+++ b/third_party/WebKit/Source/core/clipboard/DataObjectItem.h
@@ -50,6 +50,11 @@ class CORE_EXPORT DataObjectItem
   static DataObjectItem* createFromString(const String& type,
                                           const String& data);
   static DataObjectItem* createFromFile(File*);
+  // File with non-empty filesystem ID can be converted into FileEntry by using
+  // webkitGetAsEntry.
+  static DataObjectItem* createFromFileWithFileSystemId(
+      File*,
+      const String& fileSystemId);
   static DataObjectItem* createFromURL(const String& url, const String& title);
   static DataObjectItem* createFromHTML(const String& html,
                                         const KURL& baseURL);
@@ -70,6 +75,9 @@ class CORE_EXPORT DataObjectItem
   KURL baseURL() const { return m_baseURL; }
   bool isFilename() const;
 
+  bool hasFileSystemId() const;
+  String fileSystemId() const;
+
   DECLARE_TRACE();
 
  private:
@@ -93,6 +101,7 @@ class CORE_EXPORT DataObjectItem
   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