Patch 3 in the series.

WebKit/chromium/src/WebFileSystemCallbacksImpl.cpp

 /*
  * 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 58 matching lines @@
 {
     FileMetadata fileMetadata;
     fileMetadata.modificationTime = webFileInfo.modificationTime;
     fileMetadata.length = webFileInfo.length;
     fileMetadata.type = static_cast<FileMetadata::Type>(webFileInfo.type);
     fileMetadata.platformPath = webFileInfo.platformPath;
     m_callbacks->didReadMetadata(fileMetadata);
     delete this;
 }
 
+void WebFileSystemCallbacksImpl::didCreateSnapshotFile(const WebFileInfo& webFileInfo)
+{
+    // It's important to create a BlobDataHandle that refers to the platform file path prior
+    // to return from this method so the underlying file will not be deleted.
+    OwnPtr<BlobData> blobData = BlobData::create();
+    blobData->appendFile(webFileInfo.platformPath);
+    RefPtr<BlobDataHandle> snapshotBlob = BlobDataHandle::create(blobData.release(), webFileInfo.length);
+    didCreateSnapshotFile(webFileInfo, snapshotBlob);
+}
+
+void WebFileSystemCallbacksImpl::didCreateSnapshotFile(const WebFileInfo& webFileInfo, PassRefPtr<WebCore::BlobDataHandle> snapshot)
+{
+    FileMetadata fileMetadata;
+    fileMetadata.modificationTime = webFileInfo.modificationTime;
+    fileMetadata.length = webFileInfo.length;
+    fileMetadata.type = static_cast<FileMetadata::Type>(webFileInfo.type);
+    fileMetadata.platformPath = webFileInfo.platformPath;
+    m_callbacks->didCreateSnapshotFile(fileMetadata, snapshot);
+    delete this;
+}
+
 void WebFileSystemCallbacksImpl::didReadDirectory(const WebVector<WebFileSystemEntry>& entries, bool hasMore)
 {
     for (size_t i = 0; i < entries.size(); ++i)
         m_callbacks->didReadDirectoryEntry(entries[i].name, entries[i].isDirectory);
     m_callbacks->didReadDirectoryEntries(hasMore);
     delete this;
 }
 
 void WebFileSystemCallbacksImpl::didOpenFileSystem(const WebString& name, const WebURL& rootURL)
 {
@@ skipping 11 matching lines @@
 
 void WebFileSystemCallbacksImpl::didFail(WebFileError error)
 {
     m_callbacks->didFail(error);
     delete this;
 }
 
 } // namespace WebKit
 
 #endif // ENABLE(FILE_SYSTEM)