Send absolute capture time through audio coding module.

Bug: webrtc:10739
Change-Id: I44e0305be7c84b253172511c2977b1d700e40c1b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/167067
Reviewed-by: Oskar Sundbom <ossu@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Chen Xing <chxg@google.com>
Commit-Queue: Minyue Li <minyue@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30363}

modules/audio_coding/neteq/tools/rtp_encode.cc

@@ -112,7 +112,8 @@ class Packetizer : public AudioPacketizationCallback {
                    uint8_t payload_type,
                    uint32_t timestamp,
                    const uint8_t* payload_data,
-                   size_t payload_len_bytes) override {
+                   size_t payload_len_bytes,
+                   int64_t absolute_capture_timestamp_ms) override {
     if (payload_len_bytes == 0) {
       return 0;
     }