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/ProxyTest.cpp b/tests/ProxyTest.cpp
index 0636ed4..077045f 100644
--- a/tests/ProxyTest.cpp
+++ b/tests/ProxyTest.cpp
@@ -107,7 +107,7 @@
 
 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(DeferredProxyTest, reporter, ctxInfo) {
     GrProxyProvider* proxyProvider = ctxInfo.grContext()->contextPriv().proxyProvider();
-    GrResourceProvider* resourceProvider = ctxInfo.grContext()->contextPriv().resourceProvider();
+    GrResourceProvider* resourceProvider = ctxInfo.grContext()->resourceProvider();
     const GrCaps& caps = *ctxInfo.grContext()->caps();
 
     int attempt = 0; // useful for debugging
@@ -196,7 +196,7 @@
 
 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WrappedProxyTest, reporter, ctxInfo) {
     GrProxyProvider* proxyProvider = ctxInfo.grContext()->contextPriv().proxyProvider();
-    GrResourceProvider* resourceProvider = ctxInfo.grContext()->contextPriv().resourceProvider();
+    GrResourceProvider* provider = ctxInfo.grContext()->resourceProvider();
     const GrCaps& caps = *ctxInfo.grContext()->caps();
 
     static const int kWidthHeight = 100;
@@ -227,8 +227,7 @@
                                                                                 backendRT, origin));
                         check_surface(reporter, sProxy.get(), origin,
                                       kWidthHeight, kWidthHeight, config, SkBudgeted::kNo);
-                        check_rendertarget(reporter, caps, resourceProvider,
-                                           sProxy->asRenderTargetProxy(),
+                        check_rendertarget(reporter, caps, provider, sProxy->asRenderTargetProxy(),
                                            supportedNumSamples, SkBackingFit::kExact, 0, true);
                     }
 
@@ -244,8 +243,7 @@
 
                         check_surface(reporter, sProxy.get(), origin,
                                       kWidthHeight, kWidthHeight, config, budgeted);
-                        check_rendertarget(reporter, caps, resourceProvider,
-                                           sProxy->asRenderTargetProxy(),
+                        check_rendertarget(reporter, caps, provider, sProxy->asRenderTargetProxy(),
                                            supportedNumSamples, SkBackingFit::kExact,
                                            caps.maxWindowRectangles(), true);
                     } else {
@@ -261,7 +259,7 @@
 
                         check_surface(reporter, sProxy.get(), origin,
                                       kWidthHeight, kWidthHeight, config, budgeted);
-                        check_texture(reporter, resourceProvider, sProxy->asTextureProxy(),
+                        check_texture(reporter, provider, sProxy->asTextureProxy(),
                                       SkBackingFit::kExact, true);
                     }
                 }