Make GrGpuResources register with GrResourceCache2 after fully constructed.

bench/GrResourceCacheBench.cpp

Index: bench/GrResourceCacheBench.cpp
diff --git a/bench/GrResourceCacheBench.cpp b/bench/GrResourceCacheBench.cpp
index 84e0e5d4c8164d936dbd9c4890abd4bf3fcdf86c..068aff22d46854a8392a9b731687f30d9fd712f2 100644
--- a/bench/GrResourceCacheBench.cpp
+++ b/bench/GrResourceCacheBench.cpp
@@ -27,6 +27,7 @@ public:
     StencilResource(GrGpu* gpu, int id)
         : INHERITED(gpu, false)
         , fID(id) {
+        this->registerWithCache();
     }
 
     virtual ~StencilResource() { this->release(); }
@@ -51,6 +52,7 @@ public:
     TextureResource(GrGpu* gpu, int id)
         : INHERITED(gpu, false)
         , fID(id) {
+        this->registerWithCache();
     }
 
     virtual ~TextureResource() { this->release(); }