Revert "Move more internal methods from GrContext to GrContextPriv (take 2)"

This reverts commit c22e50bd317fe3658445c04e18a6e319d746c510.

Reason for revert: Speculative fix for Android roll

Original change's description:
> Move more internal methods from GrContext to GrContextPriv (take 2)
> 
> Change-Id: I47108910517d61edeb52f82793d384fdb5605d45
> Reviewed-on: https://skia-review.googlesource.com/97241
> 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: I3a77ac33c5f48529357cf9c683d5f4cacaa2379f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/97582
Reviewed-by: Leon Scroggins <scroggo@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
diff --git a/tests/EGLImageTest.cpp b/tests/EGLImageTest.cpp
index dac78a8..efa7de2 100644
--- a/tests/EGLImageTest.cpp
+++ b/tests/EGLImageTest.cpp
@@ -28,7 +28,7 @@
         glctx1->makeCurrent();
         if (grctx1) {
             if (backendTex1 && backendTex1->isValid()) {
-                GrGLGpu* gpu1 = static_cast<GrGLGpu*>(grctx1->contextPriv().getGpu());
+                GrGLGpu* gpu1 = static_cast<GrGLGpu*>(grctx1->getGpu());
                 gpu1->deleteTestingOnlyBackendTexture(backendTex1);
             }
         }
@@ -53,7 +53,7 @@
     if (kGLES_GrGLStandard != glCtx0->gl()->fStandard) {
         return;
     }
-    GrGLGpu* gpu0 = static_cast<GrGLGpu*>(context0->contextPriv().getGpu());
+    GrGLGpu* gpu0 = static_cast<GrGLGpu*>(context0->getGpu());
     if (!gpu0->glCaps().shaderCaps()->externalTextureSupport()) {
         return;
     }
@@ -83,7 +83,7 @@
 
     // Use GL Context 1 to create a texture unknown to GrContext.
     context1->flush();
-    GrGpu* gpu1 = context1->contextPriv().getGpu();
+    GrGpu* gpu1 = context1->getGpu();
     static const int kSize = 100;
     backendTexture1 =
         gpu1->createTestingOnlyBackendTexture(nullptr, kSize, kSize, kRGBA_8888_GrPixelConfig,