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diff --git a/WebCore/platform/chromium/WritableDataObject.h b/WebCore/platform/chromium/WritableDataObject.h
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+++ b/WebCore/platform/chromium/WritableDataObject.h
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+/*
+ * 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
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * 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 WritableDataObject_h
+#define WritableDataObject_h
+
+#include "KURL.h"
+#include "PlatformString.h"
+#include "SharedBuffer.h"
+#include <wtf/HashMap.h>
+#include <wtf/RefCounted.h>
+#include <wtf/RefPtr.h>
+#include <wtf/text/StringHash.h>
+
+namespace WebCore {
+
+// Used for one way communication of drag/drop and copy/paste data from the
+// renderer to the browser. This is intenteded to be used in dragstart/copy/cut
+// events. Due to shortcomings, writes to the pasteboard cannot be performed
+// atomically.
+class WritableDataObject : public RefCounted<WritableDataObject> {
+public:
+    static PassRefPtr<WritableDataObject> create(bool isForDragging);
+
+    virtual void clearData(const String& type);
+    virtual void clearAllExceptFiles();
+    virtual void clearAll();
+    virtual bool setData(const String& type, const String& data);
+
+    virtual void setURL(const String& url, const String& title);
+    virtual void setHTML(const String& html, const KURL& baseURL);
+
+    // Used for transferring drag data from the renderer to the browser.
+    virtual HashMap<String, String> dataMap() const;
+    virtual String urlTitle() const;
+    virtual KURL htmlBaseURL() const;
+
+    virtual String fileExtension() const;
+    virtual String fileContentFilename() const;
+    virtual PassRefPtr<SharedBuffer> fileContent() const;
+    virtual void setFileExtension(const String&);
+    virtual void setFileContentFilename(const String&);
+    virtual void setFileContent(PassRefPtr<SharedBuffer>);
+
+private:
+    explicit WritableDataObject(bool isForDragging);
+
+    bool m_isForDragging;
+
+    HashMap<String, String> m_dataMap;
+    String m_urlTitle;
+    KURL m_htmlBaseURL;
+    String m_fileExtension;
+    String m_fileContentFilename;
+    RefPtr<SharedBuffer> m_fileContent;
+};
+
+} // namespace WebCore
+
+#endif