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diff --git a/Source/WebKit/chromium/public/WebClipboard.h b/Source/WebKit/chromium/public/WebClipboard.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 WebClipboard_h
+#define WebClipboard_h
+
+#include "WebCommon.h"
+#include "WebString.h"
+#include "WebVector.h"
+
+namespace WebKit {
+
+class WebDragData;
+class WebImage;
+class WebURL;
+
+class WebClipboard {
+public:
+    enum Format {
+        FormatHTML,
+        FormatBookmark,
+        FormatSmartPaste
+    };
+
+    enum Buffer {
+        BufferStandard,
+        // Used on platforms like the X Window System that treat selection
+        // as a type of clipboard.
+        BufferSelection,
+        // Read-only buffer corresponding to the current drag operation, if any.
+        BufferDrag,
+    };
+
+    virtual bool isFormatAvailable(Format, Buffer) { return false; }
+
+    virtual WebString readPlainText(Buffer) { return WebString(); }
+    virtual WebString readHTML(Buffer, WebURL*) { return WebString(); }
+
+    virtual void writePlainText(const WebString&) { }
+    virtual void writeHTML(
+        const WebString& htmlText, const WebURL&,
+        const WebString& plainText, bool writeSmartPaste) { }
+    virtual void writeURL(
+        const WebURL&, const WebString& title) { }
+    virtual void writeImage(
+        const WebImage&, const WebURL&, const WebString& title) { }
+    virtual void writeData(
+        const WebString& type,
+        const WebString& data,
+        const WebString& metadata) { }
+
+    // The following functions are used for reading platform data for copy and
+    // paste, drag and drop, and selection copy (on X).
+    virtual WebVector<WebString> readAvailableTypes(
+        Buffer, bool* containsFilenames) { return WebVector<WebString>(); }
+    // Returns true if the requested type was successfully read from the buffer. 
+    virtual bool readData(
+        Buffer, const WebString& type, WebString* data,
+        WebString* metadata) { return false; }
+    virtual WebVector<WebString> readFilenames(
+        Buffer) { return WebVector<WebString>(); }
+
+protected:
+    ~WebClipboard() {}
+};
+
+} // namespace WebKit
+
+#endif