Guard SkGpuDevice

include/gpu/GrContext.h

Index: include/gpu/GrContext.h
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index de7644465a4db8331f5914ce561054bbf8873e4f..b60aea08130a618b98525cdcf3e661d66dd686f8 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -361,6 +361,9 @@ public:
 
     GrAuditTrail* getAuditTrail() { return &fAuditTrail; }
 
+    /** This is only useful for debug purposes */
+    SkDEBUGCODE(GrSingleOwner* debugSingleOwner() const { return &fSingleOwner; } )
+
 private:
     GrGpu*                          fGpu;
     const GrCaps*                   fCaps;