Split out methods in GrGpuResource::CacheAccess that can be called outside of the cache.

src/gpu/GrGpuResource.cpp

Index: src/gpu/GrGpuResource.cpp
diff --git a/src/gpu/GrGpuResource.cpp b/src/gpu/GrGpuResource.cpp
index 7f65af25d4e9c6431152bdbd1f76b0dfe1b1cc11..dbf5d8c2bbe18830e7f3b7133017906455240e39 100644
--- a/src/gpu/GrGpuResource.cpp
+++ b/src/gpu/GrGpuResource.cpp
@@ -9,6 +9,7 @@
 #include "GrGpuResource.h"
 #include "GrResourceCache.h"
 #include "GrGpu.h"
+#include "GrGpuResourcePriv.h"
 
 static inline GrResourceCache* get_resource_cache(GrGpu* gpu) {
     SkASSERT(gpu);
@@ -94,7 +95,7 @@ bool GrGpuResource::setContentKey(const GrContentKey& key) {
     SkASSERT(key.isValid());
 
     // Wrapped and uncached resources can never have a content key.
-    if (!this->cacheAccess().isBudgeted()) {
+    if (!this->resourcePriv().isBudgeted()) {
         return false;
     }