Reland "Move from libstlport to libc++ for Android framework builds" (patchset #1 id:1 of https://codereview.chromium.org/718793003/)

> Original issue's description:
> > Move from libstlport to libc++ for Android framework builds
> >
> > Committed: https://skia.googlesource.com/skia/+/ce259510a738fab05a0d456440104f5aba1c9d72
>
> TBR=tomhudson@google.com,djsollen@google.com
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://skia.googlesource.com/skia/+/3c3fe7ce4893204eb8bcf885e8a1d539763bca5d

TBR=tomhudson@google.com,djsollen@google.com
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/717303002
6 files changed