This reverts commit fdbdb2b2.

Reason for revert:
I didn't mean to land this quite yet, since we are still working on the Android side of things.   It seems doing CQ+2 merges it while I was trying for just a dry run while replying to Jamie's comments with updates (after checking with Boulder folks, I want CQ+1 next time).

Once the Android changes are ready, I'll work on getting this landed again.

Original change's description:
> Enhance ANGLE for Android Developer Options
> 
> Update ANGLE Developer Options
> 
> Update ANGLE developer options to allow selecting the OpenGL driver
> (default, ANGLE, native) for each app as well as forcing ANGLE for all
> apps.
> 
> Bug: angleproject:2962
> Test: Verify the default/ANGLE/native values are saved and applied and
> used by the loader.
> 
> Change-Id: I6041e7e49ca5cc65f90fc8ae6f1b084e4639d769
> Reviewed-on: https://chromium-review.googlesource.com/c/1330315
> Commit-Queue: Tim Van Patten <timvp@google.com>
> Reviewed-by: Geoff Lang <geofflang@chromium.org>
> Reviewed-by: Jamie Madill <jmadill@chromium.org>

TBR=ynovikov@chromium.org,geofflang@chromium.org,jmadill@chromium.org,cnorthrop@google.com,tobine@google.com,courtneygo@google.com,ianelliott@google.com,timvp@google.com

Change-Id: If3a4e917973c56b858244a0ca7f1b164143524f5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: angleproject:2962
Reviewed-on: https://chromium-review.googlesource.com/c/1354099Reviewed-by: Tim Van Patten <timvp@google.com>
Commit-Queue: Tim Van Patten <timvp@google.com>