Revert "Move resourceProvider accessor to GrContextPriv"

This reverts commit 1f9ed8501b0007846b3032f4bfc38aee98c175a1.

Reason for revert: 
 1. breaking android roll 
 2. breaking Build-Debian9-Clang-arm-Release-Android_API26



Original change's description:
> Move resourceProvider accessor to GrContextPriv
> 
> Change-Id: I5cddd620a7ec4b006b7359864ede58e9d4dd684e
> Reviewed-on: https://skia-review.googlesource.com/94340
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Robert Phillips <robertphillips@google.com>

TBR=egdaniel@google.com,bsalomon@google.com,robertphillips@google.com

Change-Id: I20b2d267c0925f20453b635663654967199a1197
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/94964
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
40 files changed