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>
diff --git a/tests/ProcessorTest.cpp b/tests/ProcessorTest.cpp
index 26f10a3..e675335 100644
--- a/tests/ProcessorTest.cpp
+++ b/tests/ProcessorTest.cpp
@@ -158,7 +158,6 @@
 DEF_GPUTEST_FOR_ALL_CONTEXTS(ProcessorRefTest, reporter, ctxInfo) {
     GrContext* context = ctxInfo.grContext();
     GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider();
-    GrResourceProvider* resourceProvider = context->contextPriv().resourceProvider();
 
     GrSurfaceDesc desc;
     desc.fOrigin = kTopLeft_GrSurfaceOrigin;
@@ -182,7 +181,7 @@
                 sk_sp<GrTextureProxy> proxy4 =
                         proxyProvider->createProxy(desc, SkBackingFit::kExact, SkBudgeted::kYes);
                 sk_sp<GrBuffer> buffer(texelBufferSupport
-                        ? resourceProvider->createBuffer(
+                        ? context->resourceProvider()->createBuffer(
                                   1024, GrBufferType::kTexel_GrBufferType,
                                   GrAccessPattern::kStatic_GrAccessPattern, 0)
                         : nullptr);
@@ -353,7 +352,6 @@
 DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(ProcessorOptimizationValidationTest, reporter, ctxInfo) {
     GrContext* context = ctxInfo.grContext();
     GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider();
-    auto resourceProvider = context->contextPriv().resourceProvider();
     using FPFactory = GrFragmentProcessorTestFactory;
 
     uint32_t seed = 0;
@@ -393,7 +391,7 @@
         }
         for (int j = 0; j < timesToInvokeFactory; ++j) {
             fp = FPFactory::MakeIdx(i, &testData);
-            if (!fp->instantiate(resourceProvider)) {
+            if (!fp->instantiate(context->resourceProvider())) {
                 continue;
             }
 
@@ -492,7 +490,6 @@
 DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(ProcessorCloneTest, reporter, ctxInfo) {
     GrContext* context = ctxInfo.grContext();
     GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider();
-    auto resourceProvider = context->contextPriv().resourceProvider();
 
     SkRandom random;
 
@@ -525,7 +522,8 @@
                 continue;
             }
             const char* name = fp->name();
-            if (!fp->instantiate(resourceProvider) || !clone->instantiate(resourceProvider)) {
+            if (!fp->instantiate(context->resourceProvider()) ||
+                !clone->instantiate(context->resourceProvider())) {
                 continue;
             }
             REPORTER_ASSERT(reporter, !strcmp(fp->name(), clone->name()));