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diff --git a/WebCore/platform/chromium/WritableDataObject.cpp b/WebCore/platform/chromium/WritableDataObject.cpp
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+++ b/WebCore/platform/chromium/WritableDataObject.cpp
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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.
+ */
+
+#include "config.h"
+#include "WritableDataObject.h"
+
+#include "ChromiumBridge.h"
+#include "ClipboardMimeTypes.h"
+
+namespace WebCore {
+
+PassRefPtr<WritableDataObject> WritableDataObject::create(bool isForDragging)
+{
+    return adoptRef(new WritableDataObject(isForDragging));
+}
+
+WritableDataObject::WritableDataObject(bool isForDragging)
+    : m_isForDragging(isForDragging)
+{
+}
+
+void WritableDataObject::clearData(const String& type)
+{
+    m_dataMap.remove(type);
+    if (type == textUriListType)
+        m_urlTitle = "";
+    else if (type == textHtmlType)
+        m_htmlBaseURL = KURL();
+}
+
+void WritableDataObject::clearAllExceptFiles()
+{
+    // FIXME: The spec does not provide a way to populate FileList currently. In
+    // fact, the spec explicitly states that dragging files can only happen from
+    // outside a browsing context.
+    clearAll();
+}
+
+void WritableDataObject::clearAll()
+{
+    m_dataMap.clear();
+    m_urlTitle = "";
+    m_htmlBaseURL = KURL();
+    m_fileContentFilename = "";
+    if (m_fileContent)
+        m_fileContent->clear();
+    m_fileExtension = "";
+}
+
+bool WritableDataObject::setData(const String& type, const String& data)
+{
+    if (!m_isForDragging) {
+        ChromiumBridge::clipboardWriteData(type, data, "");
+        return true;
+    }
+    m_dataMap.set(type, data);
+    if (type == textUriListType)
+        m_urlTitle = "";
+    else if (type == textHtmlType)
+        m_htmlBaseURL = KURL();
+    return true;
+}
+
+void WritableDataObject::setURL(const String& url, const String& title)
+{
+    setData(textUriListType, url);
+    m_urlTitle = title;
+}
+
+void WritableDataObject::setHTML(const String& html, const KURL& baseURL)
+{
+    setData(textHtmlType, html);
+    m_htmlBaseURL = baseURL;
+}
+
+// Accessors used when transferring drag data from the renderer to the
+// browser.
+HashMap<String, String> WritableDataObject::dataMap() const
+{
+    return m_dataMap;
+}
+
+String WritableDataObject::urlTitle() const
+{
+    return m_urlTitle;
+}
+
+KURL WritableDataObject::htmlBaseURL() const
+{
+    return m_htmlBaseURL;
+}
+
+// Used for transferring file data from the renderer to the browser.
+String WritableDataObject::fileExtension() const
+{
+    return m_fileExtension;
+}
+
+String WritableDataObject::fileContentFilename() const
+{
+    return m_fileContentFilename;
+}
+
+PassRefPtr<SharedBuffer> WritableDataObject::fileContent() const
+{
+    return m_fileContent;
+}
+
+void WritableDataObject::setFileExtension(const String& fileExtension)
+{
+    m_fileExtension = fileExtension;
+}
+
+void WritableDataObject::setFileContentFilename(const String& fileContentFilename)
+{
+    m_fileContentFilename = fileContentFilename;
+}
+
+void WritableDataObject::setFileContent(PassRefPtr<SharedBuffer> fileContent)
+{
+    m_fileContent = fileContent;
+}
+
+
+} // namespace WebCore