Make GrGpuResources register with GrResourceCache2 after fully constructed.

include/gpu/GrGpuResource.h

Index: include/gpu/GrGpuResource.h
diff --git a/include/gpu/GrGpuResource.h b/include/gpu/GrGpuResource.h
index 8b162823bf6e65f3f6904bc4d20d391559b8d220..17cdfc9a4cbe10e82c51e7a57545a0558729fc72 100644
--- a/include/gpu/GrGpuResource.h
+++ b/include/gpu/GrGpuResource.h
@@ -90,6 +90,11 @@ public:
     uint32_t getUniqueID() const { return fUniqueID; }
 
 protected:
+
+    // This must be called by every GrGpuObject. It should be called once the object is fully
+    // initialized (i.e. not in a base class constructor).
+    void registerWithCache();
+
     GrGpuResource(GrGpu*, bool isWrapped);
     virtual ~GrGpuResource();