Add RTCP packet type counter (for getting statistics such as sent/received NACK and FIR).
Add counter to RTCP sender and RTCP receiver.
Add video api GetRtcpPacketTypes().

BUG=2638
R=mflodman@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/8179004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5575 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h b/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h
index 42c7b4e..2215ac0 100644
--- a/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h
+++ b/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h
@@ -168,6 +168,8 @@
       int32_t(const uint32_t SSRC, const RTCPReportBlock* receiveBlock));
   MOCK_METHOD1(RemoveRTCPReportBlock,
       int32_t(const uint32_t SSRC));
+  MOCK_CONST_METHOD2(GetRtcpPacketTypeCounters,
+      void(RtcpPacketTypeCounter*, RtcpPacketTypeCounter*));
   MOCK_METHOD4(SetRTCPApplicationSpecificData,
       int32_t(const uint8_t subType, const uint32_t name, const uint8_t* data, const uint16_t length));
   MOCK_METHOD1(SetRTCPVoIPMetrics,