Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

modules/rtp_rtcp/source/rtcp_packet/remb.h

@@ -0,0 +1,60 @@
+/*
+ *  Copyright (c) 2016 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_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_
+#define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_
+
+#include <vector>
+
+#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/psfb.h"
+#include "webrtc/rtc_base/basictypes.h"
+
+namespace webrtc {
+namespace rtcp {
+class CommonHeader;
+
+// Receiver Estimated Max Bitrate (REMB) (draft-alvestrand-rmcat-remb).
+class Remb : public Psfb {
+ public:
+  static constexpr uint8_t kFeedbackMessageType = 15;
+  static constexpr size_t kMaxNumberOfSsrcs = 0xff;
+
+  Remb();
+  ~Remb() override;
+
+  // Parse assumes header is already parsed and validated.
+  bool Parse(const CommonHeader& packet);
+
+  bool SetSsrcs(std::vector<uint32_t> ssrcs);
+  void SetBitrateBps(uint64_t bitrate_bps) { bitrate_bps_ = bitrate_bps; }
+
+  uint64_t bitrate_bps() const { return bitrate_bps_; }
+  const std::vector<uint32_t>& ssrcs() const { return ssrcs_; }
+
+  size_t BlockLength() const override;
+
+  bool Create(uint8_t* packet,
+              size_t* index,
+              size_t max_length,
+              RtcpPacket::PacketReadyCallback* callback) const override;
+
+ private:
+  static constexpr uint32_t kUniqueIdentifier = 0x52454D42;  // 'R' 'E' 'M' 'B'.
+
+  // Media ssrc is unused, shadow base class setter and getter.
+  void SetMediaSsrc(uint32_t);
+  uint32_t media_ssrc() const;
+
+  uint64_t bitrate_bps_;
+  std::vector<uint32_t> ssrcs_;
+};
+}  // namespace rtcp
+}  // namespace webrtc
+#endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_