Reland of moves usage of native base::android::GetApplicationContext() (patchset #1 id:1 of https://codereview.webrtc.org/2894593002/ )

Reason for revert:
Fix issue.

Original issue's description:
> Revert of Removes usage of native base::android::GetApplicationContext() (patchset #6 id:120001 of https://codereview.webrtc.org/2888093004/ )
>
> 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: https://chromium.googlesource.com/external/webrtc/+/bc83e2ee696ca3672b8cebd658672e95eec4e465
>
> 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}
> Committed: https://chromium.googlesource.com/external/webrtc/+/40d224814a68bf90e5ab847df0105de2a89006e9

BUG=webrtc:7665

Review-Url: https://codereview.webrtc.org/2889183002
Cr-Original-Commit-Position: refs/heads/master@{#18235}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 7855fff5bf045e7975fca78bce6d85d0add61c0f
17 files changed