drawinfo carries bufferinfo

include/gpu/GrGpuResourceRef.h

Index: include/gpu/GrGpuResourceRef.h
diff --git a/include/gpu/GrGpuResourceRef.h b/include/gpu/GrGpuResourceRef.h
index 93298f0656f4e5e03529c27e04e59233c0dba1bc..3742e2519519dfaafaf251ca38fe2a553a7e44fc 100644
--- a/include/gpu/GrGpuResourceRef.h
+++ b/include/gpu/GrGpuResourceRef.h
@@ -159,25 +159,38 @@ private:
  */
 template <typename T, GrIOType IO_TYPE> class GrPendingIOResource : SkNoncopyable {
 public:
-    GrPendingIOResource(T* resource) : fResource(resource) {
-        if (NULL != fResource) {
+    GrPendingIOResource(T* resource = NULL) : fResource(NULL) {
+        this->reset(resource);
+    }
+
+    void reset(T* resource) {
+        if (resource) {
             switch (IO_TYPE) {
                 case kRead_GrIOType:
-                    fResource->addPendingRead();
+                    resource->addPendingRead();
                     break;
                 case kWrite_GrIOType:
-                    fResource->addPendingWrite();
+                    resource->addPendingWrite();
                     break;
                 case kRW_GrIOType:
-                    fResource->addPendingRead();
-                    fResource->addPendingWrite();
+                    resource->addPendingRead();
+                    resource->addPendingWrite();
                     break;
             }
         }
+        this->release();
+        fResource = resource;
     }
 
     ~GrPendingIOResource() {
-        if (NULL != fResource) {
+        this->release();
+    }
+
+    T* get() const { return fResource; }
+
+private:
+    void release() {
+        if (fResource) {
             switch (IO_TYPE) {
                 case kRead_GrIOType:
                     fResource->completedRead();
@@ -193,9 +206,6 @@ public:
         }
     }
 
-    T* get() const { return fResource; }
-
-private:
     T* fResource;
 };
 #endif