Log current time if we stop logging before stop_time_.
Log current time if we stop logging before stop_time_.

This happens if we stop logging because we have reached the file size limit. The large timestamp causes problems in the analysis tool.

BUG=webrtc:6138

Review-Url: https://codereview.webrtc.org/2175713002
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#13581}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 76a44d5dafa4114c52c55d5dd84de3f4f02dc95b

Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk