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diff --git a/webrtc/modules/rtp_rtcp/source/rtp_utility.h b/webrtc/modules/rtp_rtcp/source/rtp_utility.h
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+++ b/webrtc/modules/rtp_rtcp/source/rtp_utility.h
@@ -0,0 +1,99 @@
+/*
+ *  Copyright (c) 2012 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_RTP_UTILITY_H_
+#define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_UTILITY_H_
+
+#include <stddef.h> // size_t, ptrdiff_t
+
+#include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h"
+#include "webrtc/modules/rtp_rtcp/interface/receive_statistics.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_header_extension.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_config.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+
+const uint8_t kRtpMarkerBitMask = 0x80;
+
+RtpData* NullObjectRtpData();
+RtpFeedback* NullObjectRtpFeedback();
+RtpAudioFeedback* NullObjectRtpAudioFeedback();
+ReceiveStatistics* NullObjectReceiveStatistics();
+
+namespace RtpUtility {
+    // January 1970, in NTP seconds.
+    const uint32_t NTP_JAN_1970 = 2208988800UL;
+
+    // Magic NTP fractional unit.
+    const double NTP_FRAC = 4.294967296E+9;
+
+    struct Payload
+    {
+        char name[RTP_PAYLOAD_NAME_SIZE];
+        bool audio;
+        PayloadUnion typeSpecific;
+    };
+
+    typedef std::map<int8_t, Payload*> PayloadTypeMap;
+
+    // Return the current RTP timestamp from the NTP timestamp
+    // returned by the specified clock.
+    uint32_t GetCurrentRTP(Clock* clock, uint32_t freq);
+
+    // Return the current RTP absolute timestamp.
+    uint32_t ConvertNTPTimeToRTP(uint32_t NTPsec,
+                                 uint32_t NTPfrac,
+                                 uint32_t freq);
+
+    uint32_t pow2(uint8_t exp);
+
+    // Returns true if |newTimestamp| is older than |existingTimestamp|.
+    // |wrapped| will be set to true if there has been a wraparound between the
+    // two timestamps.
+    bool OldTimestamp(uint32_t newTimestamp,
+                      uint32_t existingTimestamp,
+                      bool* wrapped);
+
+    bool StringCompare(const char* str1,
+                       const char* str2,
+                       const uint32_t length);
+
+    // Round up to the nearest size that is a multiple of 4.
+    size_t Word32Align(size_t size);
+
+    class RtpHeaderParser {
+    public:
+     RtpHeaderParser(const uint8_t* rtpData, size_t rtpDataLength);
+     ~RtpHeaderParser();
+
+        bool RTCP() const;
+        bool ParseRtcp(RTPHeader* header) const;
+        bool Parse(RTPHeader& parsedPacket,
+                   RtpHeaderExtensionMap* ptrExtensionMap = NULL) const;
+
+    private:
+        void ParseOneByteExtensionHeader(
+            RTPHeader& parsedPacket,
+            const RtpHeaderExtensionMap* ptrExtensionMap,
+            const uint8_t* ptrRTPDataExtensionEnd,
+            const uint8_t* ptr) const;
+
+        uint8_t ParsePaddingBytes(
+            const uint8_t* ptrRTPDataExtensionEnd,
+            const uint8_t* ptr) const;
+
+        const uint8_t* const _ptrRTPDataBegin;
+        const uint8_t* const _ptrRTPDataEnd;
+    };
+}  // namespace RtpUtility
+}  // namespace webrtc
+
+#endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_UTILITY_H_