Renamed video_coding/packet_buffer_unittest.cc.

Renamed video_coding/packet_buffer_unittest.cc to
video_coding/video_packet_buffer_unittest.cc

BUG=webrtc:5949
TBR=stefan@webrtc.org

Review-Url: https://codereview.webrtc.org/2049693002
Cr-Original-Commit-Position: refs/heads/master@{#13074}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: bde418d84c22537f96cefe960639c647c594af2c
2 files changed