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/src/gpu/GrTextureMaker.cpp b/src/gpu/GrTextureMaker.cpp
index 5043675..1fc5f7a 100644
--- a/src/gpu/GrTextureMaker.cpp
+++ b/src/gpu/GrTextureMaker.cpp
@@ -28,16 +28,16 @@
         *texColorSpace = this->getColorSpace(dstColorSpace);
     }
 
-    GrGpu* gpu = fContext->contextPriv().getGpu();
     sk_sp<GrTextureProxy> original(this->refOriginalTextureProxy(willBeMipped, dstColorSpace,
                                                                  AllowedTexGenType::kCheap));
     if (original) {
-        if (!gpu->isACopyNeededForTextureParams(original.get(), params, &copyParams, scaleAdjust)) {
+        if (!fContext->getGpu()->isACopyNeededForTextureParams(original.get(), params, &copyParams,
+                                                               scaleAdjust)) {
             return original;
         }
     } else {
-        if (!gpu->isACopyNeededForTextureParams(this->width(), this->height(),
-                                                params, &copyParams, scaleAdjust)) {
+        if (!fContext->getGpu()->isACopyNeededForTextureParams(this->width(), this->height(),
+                                                               params, &copyParams, scaleAdjust)) {
             return this->refOriginalTextureProxy(willBeMipped, dstColorSpace,
                                                  AllowedTexGenType::kAny);
         }