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diff --git a/WebKit/chromium/src/WebDataSourceImpl.h b/WebKit/chromium/src/WebDataSourceImpl.h
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+/*
+ * 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.
+ */
+
+#ifndef WebDataSourceImpl_h
+#define WebDataSourceImpl_h
+
+// FIXME: This relative path is a temporary hack to support using this
+// header from webkit/glue.
+#include "../public/WebDataSource.h"
+
+#include "DocumentLoader.h"
+#include "KURL.h"
+
+#include "WebPluginLoadObserver.h"
+#include "WrappedResourceRequest.h"
+#include "WrappedResourceResponse.h"
+
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/Vector.h>
+
+
+namespace WebKit {
+
+class WebPluginLoadObserver;
+
+class WebDataSourceImpl : public WebCore::DocumentLoader, public WebDataSource {
+public:
+    static PassRefPtr<WebDataSourceImpl> create(const WebCore::ResourceRequest&,
+                                                const WebCore::SubstituteData&);
+
+    static WebDataSourceImpl* fromDocumentLoader(WebCore::DocumentLoader* loader)
+    {
+        return static_cast<WebDataSourceImpl*>(loader);
+    }
+
+    // WebDataSource methods:
+    virtual const WebURLRequest& originalRequest() const;
+    virtual const WebURLRequest& request() const;
+    virtual const WebURLResponse& response() const;
+    virtual bool hasUnreachableURL() const;
+    virtual WebURL unreachableURL() const;
+    virtual void redirectChain(WebVector<WebURL>&) const;
+    virtual WebString pageTitle() const;
+    virtual WebNavigationType navigationType() const;
+    virtual double triggeringEventTime() const;
+    virtual ExtraData* extraData() const;
+    virtual void setExtraData(ExtraData*);
+
+    static WebNavigationType toWebNavigationType(WebCore::NavigationType type);
+
+    bool hasRedirectChain() const { return !m_redirectChain.isEmpty(); }
+    const WebCore::KURL& endOfRedirectChain() const;
+    void clearRedirectChain();
+    void appendRedirect(const WebCore::KURL& url);
+
+    PassOwnPtr<WebPluginLoadObserver> releasePluginLoadObserver() { return m_pluginLoadObserver.release(); }
+    static void setNextPluginLoadObserver(PassOwnPtr<WebPluginLoadObserver>);
+
+private:
+    WebDataSourceImpl(const WebCore::ResourceRequest&, const WebCore::SubstituteData&);
+    ~WebDataSourceImpl();
+
+    // Mutable because the const getters will magically sync these to the
+    // latest version from WebKit.
+    mutable WrappedResourceRequest m_originalRequestWrapper;
+    mutable WrappedResourceRequest m_requestWrapper;
+    mutable WrappedResourceResponse m_responseWrapper;
+
+    // Lists all intermediate URLs that have redirected for the current provisional load.
+    // See WebFrameLoaderClient::dispatchDidReceiveServerRedirectForProvisionalLoad for a
+    // description of who modifies this when to keep it up to date.
+    Vector<WebCore::KURL> m_redirectChain;
+
+    OwnPtr<ExtraData> m_extraData;
+    OwnPtr<WebPluginLoadObserver> m_pluginLoadObserver;
+
+    static WebPluginLoadObserver* m_nextPluginLoadObserver;
+};
+
+} // namespace WebKit
+
+#endif  // WebDataSourceImpl_h