Revert "Move more internal methods from GrContext to GrContextPriv"

This reverts commit f440cecbfdf1910104f36aedd0e963da2ae8b6a8.

Reason for revert: breaking android builds. 

Original change's description:
> Move more internal methods from GrContext to GrContextPriv
> 
> TBR=bsalomon@google.com
> Change-Id: Ia8cf0e0d30451c69bc7a08215aafa6abe6e0ddbe
> Reviewed-on: https://skia-review.googlesource.com/97080
> Commit-Queue: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>

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

Change-Id: If263f8161f0fbe3fc6ee8f34bb09e237705c3694
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/97200
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/bench/GrResourceCacheBench.cpp b/bench/GrResourceCacheBench.cpp
index a530e62..c48aed5 100644
--- a/bench/GrResourceCacheBench.cpp
+++ b/bench/GrResourceCacheBench.cpp
@@ -83,7 +83,7 @@
         cache->purgeAllUnlocked();
         SkASSERT(0 == cache->getResourceCount() && 0 == cache->getResourceBytes());
 
-        GrGpu* gpu = context->contextPriv().getGpu();
+        GrGpu* gpu = context->getGpu();
 
         for (int i = 0; i < loops; ++i) {
             populate_cache(gpu, CACHE_SIZE_COUNT, fKeyData32Count);
@@ -129,7 +129,7 @@
         cache->purgeAllUnlocked();
         SkASSERT(0 == cache->getResourceCount() && 0 == cache->getResourceBytes());
 
-        GrGpu* gpu = fContext->contextPriv().getGpu();
+        GrGpu* gpu = fContext->getGpu();
 
         populate_cache(gpu, CACHE_SIZE_COUNT, fKeyData32Count);
     }