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diff --git a/chromium/third_party/webrtc/base/multipart.h b/chromium/third_party/webrtc/base/multipart.h
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+++ b/chromium/third_party/webrtc/base/multipart.h
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+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_BASE_MULTIPART_H__
+#define WEBRTC_BASE_MULTIPART_H__
+
+#include <string>
+#include <vector>
+
+#include "webrtc/base/sigslot.h"
+#include "webrtc/base/stream.h"
+
+namespace rtc {
+
+///////////////////////////////////////////////////////////////////////////////
+// MultipartStream - Implements an RFC2046 multipart stream by concatenating
+// the supplied parts together, and adding the correct boundaries.
+///////////////////////////////////////////////////////////////////////////////
+
+class MultipartStream : public StreamInterface, public sigslot::has_slots<> {
+ public:
+  MultipartStream(const std::string& type, const std::string& boundary);
+  virtual ~MultipartStream();
+
+  void GetContentType(std::string* content_type);
+
+  // Note: If content_disposition and/or content_type are the empty string,
+  // they will be omitted.
+  bool AddPart(StreamInterface* data_stream,
+               const std::string& content_disposition,
+               const std::string& content_type);
+  bool AddPart(const std::string& data,
+               const std::string& content_disposition,
+               const std::string& content_type);
+  void EndParts();
+
+  // Calculates the size of a part before actually adding the part.
+  size_t GetPartSize(const std::string& data,
+                     const std::string& content_disposition,
+                     const std::string& content_type) const;
+  size_t GetEndPartSize() const;
+
+  // StreamInterface
+  virtual StreamState GetState() const;
+  virtual StreamResult Read(void* buffer, size_t buffer_len,
+                            size_t* read, int* error);
+  virtual StreamResult Write(const void* data, size_t data_len,
+                             size_t* written, int* error);
+  virtual void Close();
+  virtual bool SetPosition(size_t position);
+  virtual bool GetPosition(size_t* position) const;
+  virtual bool GetSize(size_t* size) const;
+  virtual bool GetAvailable(size_t* size) const;
+
+ private:
+  typedef std::vector<StreamInterface*> PartList;
+
+  // StreamInterface Slots
+  void OnEvent(StreamInterface* stream, int events, int error);
+
+  std::string type_, boundary_;
+  PartList parts_;
+  bool adding_;
+  size_t current_;  // The index into parts_ of the current read position.
+  size_t position_;  // The current read position in bytes.
+
+  DISALLOW_COPY_AND_ASSIGN(MultipartStream);
+};
+
+}  // namespace rtc
+
+#endif  // WEBRTC_BASE_MULTIPART_H__