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diff --git a/webkit/glue/plugins/plugin_data_stream.h b/webkit/glue/plugins/plugin_data_stream.h
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+++ b/webkit/glue/plugins/plugin_data_stream.h
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+// Copyright 2008, 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 WEBKIT_GLUE_PLUGIN_PLUGIN_DATA_STREAM_H__
+#define WEBKIT_GLUE_PLUGIN_PLUGIN_DATA_STREAM_H__
+
+#include "webkit/glue/plugins/plugin_stream.h"
+
+namespace NPAPI {
+
+class PluginInstance;
+
+// A NPAPI stream based on data received from the renderer.
+class PluginDataStream : public PluginStream {
+ public:
+  // Create a new stream for sending to the plugin.
+  PluginDataStream(PluginInstance *instance, const std::string& url,
+                     const std::string& mime_type, const std::string& headers,
+                     uint32 expected_length, uint32 last_modified);
+  virtual ~PluginDataStream();
+
+  // Initiates the sending of data to the plugin.
+  void SendToPlugin(const char* buffer, int length);
+
+ private:
+  std::string mime_type_;
+  std::string headers_;
+  uint32 expected_length_;
+  uint32 last_modified_;
+  // This flag when set serves as an indicator that subsequent 
+  // data coming from the renderer should not be handed off to the plugin.
+  bool stream_open_failed_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(PluginDataStream);
+};
+
+} // namespace NPAPI
+
+#endif // WEBKIT_GLUE_PLUGIN_PLUGIN_DATA_STREAM_H__
+