--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/chromium/src/WebData.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2009 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 "WebData.h"
+
+#include "SharedBuffer.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+class WebDataPrivate : public SharedBuffer {
+};
+
+void WebData::reset()
+{
+    if (m_private) {
+        m_private->deref();
+        m_private = 0;
+    }
+}
+
+void WebData::assign(const WebData& other)
+{
+    WebDataPrivate* p = const_cast<WebDataPrivate*>(other.m_private);
+    if (p)
+        p->ref();
+    assign(p);
+}
+
+void WebData::assign(const char* data, size_t size)
+{
+    assign(static_cast<WebDataPrivate*>(
+        SharedBuffer::create(data, size).releaseRef()));
+}
+
+size_t WebData::size() const
+{
+    if (!m_private)
+        return 0;
+    return const_cast<WebDataPrivate*>(m_private)->size();
+}
+
+const char* WebData::data() const
+{
+    if (!m_private)
+        return 0;
+    return const_cast<WebDataPrivate*>(m_private)->data();
+}
+
+WebData::WebData(const PassRefPtr<SharedBuffer>& buffer)
+    : m_private(static_cast<WebDataPrivate*>(buffer.releaseRef()))
+{
+}
+
+WebData& WebData::operator=(const PassRefPtr<SharedBuffer>& buffer)
+{
+    assign(static_cast<WebDataPrivate*>(buffer.releaseRef()));
+    return *this;
+}
+
+WebData::operator PassRefPtr<SharedBuffer>() const
+{
+    return PassRefPtr<SharedBuffer>(const_cast<WebDataPrivate*>(m_private));
+}
+
+void WebData::assign(WebDataPrivate* p)
+{
+    // p is already ref'd for us by the caller
+    if (m_private)
+        m_private->deref();
+    m_private = p;
+}
+
+} // namespace WebKit