Reason for revert:
Breaks bot on chromium.webrtc.fyi.
Original issue's description:
> Removes usage of native base::android::GetApplicationContext()
>
> BUG=webrtc:7665
>
> Review-Url: https://codereview.webrtc.org/2888093004
> Cr-Commit-Position: refs/heads/master@{#18195}
> Committed: bc83e2ee69
TBR=magjed@webrtc.org,henrika@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7665
Review-Url: https://codereview.webrtc.org/2894593002
Cr-Commit-Position: refs/heads/master@{#18196}