Added gn target for rtc_event_log2rtp_dump.

BUG=webrtc:6191

Review-Url: https://codereview.webrtc.org/2629353004
Cr-Original-Commit-Position: refs/heads/master@{#16483}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 54b6e982dfc9c2269f450738365e7bc2e8193d3b
2 files changed