Revert of moves usage of native base::android::GetApplicationContext()

Revert of moves usage of native base::android::GetApplicationContext() (patchset #4 id:410001 of https://codereview.webrtc.org/2889183002/ )

Reason for revert:
Breaking internal project

Original issue's description:
> 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-Commit-Position: refs/heads/master@{#18235}
> Committed: https://chromium.googlesource.com/external/webrtc/+/7855fff5bf045e7975fca78bce6d85d0add61c0f

TBR=magjed@webrtc.org,henrika@webrtc.org,sakal@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:7665

[lliuu, 2017-05-24 21:36:11]

The CQ bit was checked by lliuu@webrtc.org

[lliuu, 2017-05-24 21:36:11]

Created Revert of moves usage of native base::android::GetApplicationContext()

[commit-bot: I haz the power, 2017-05-24 21:36:22]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-05-24 21:39:51]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-05-24 21:39:52]

Try jobs failed on following builders:
  android_arm64_rel on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/android_arm64_rel/build...)
  android_compile_x86_rel on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/android_compile_x86_rel...)
  android_rel on master.tryserver.webrtc (JOB_FAILED,
http://build.chromium.org/p/tryserver.webrtc/builders/android_rel/builds/24360)