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diff --git a/WebKit/chromium/public/WebPageSerializerClient.h b/WebKit/chromium/public/WebPageSerializerClient.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 WebPageSerializerClient_h
+#define WebPageSerializerClient_h
+
+namespace WebKit {
+class WebCString;
+class WebURL;
+
+// This class is used for providing sink interface that can be used to receive
+// the individual chunks of data to be saved.
+class WebPageSerializerClient {
+public:
+    // This enum indicates  This sink interface can receive the individual chunks
+    // of serialized data to be saved, so we use values of following enum
+    // definition to indicate the serialization status of serializing all html
+    // content. If current frame is not complete serialized, call
+    // didSerializeDataForFrame with URL of current frame, data, data length and
+    // flag CurrentFrameIsNotFinished.
+    // If current frame is complete serialized, call didSerializeDataForFrame
+    // with URL of current frame, data, data length and flag
+    // CurrentFrameIsFinished.
+    // If all frames of page are complete serialized, call
+    // didSerializeDataForFrame with empty URL, empty data, 0 and flag
+    // AllFramesAreFinished.
+    enum PageSerializationStatus {
+        CurrentFrameIsNotFinished,
+        CurrentFrameIsFinished,
+        AllFramesAreFinished,
+    };
+
+    // Receive the individual chunks of serialized and encoded data to be saved.
+    // The parameter frameURL specifies what frame the data belongs. The
+    // parameter data contains the available data for saving. The parameter
+    // status indicates the status of data serialization.
+    virtual void didSerializeDataForFrame(const WebURL& frameURL,
+                                          const WebCString& data,
+                                          PageSerializationStatus status) = 0;
+    WebPageSerializerClient() { }
+
+protected:
+    virtual ~WebPageSerializerClient() { }
+};
+
+}  // namespace WebKit
+
+#endif