Revert 180093

ppapi/shared_impl/var_tracker.cc

Index: ppapi/shared_impl/var_tracker.cc
===================================================================
--- ppapi/shared_impl/var_tracker.cc	(revision 180103)
+++ ppapi/shared_impl/var_tracker.cc	(working copy)
@@ -186,18 +186,13 @@
 
 PP_Var VarTracker::MakeArrayBufferPPVar(uint32 size_in_bytes,
                                         const void* data) {
-  ArrayBufferVar* array_buffer = MakeArrayBufferVar(size_in_bytes, data);
-  return array_buffer ? array_buffer->GetPPVar() : PP_MakeNull();
-}
-
-ArrayBufferVar* VarTracker::MakeArrayBufferVar(uint32 size_in_bytes,
-                                               const void* data) {
   DCHECK(CalledOnValidThread());
-  ArrayBufferVar* array_buffer(CreateArrayBuffer(size_in_bytes));
+
+  scoped_refptr<ArrayBufferVar> array_buffer(CreateArrayBuffer(size_in_bytes));
   if (!array_buffer)
-    return NULL;
+    return PP_MakeNull();
   memcpy(array_buffer->Map(), data, size_in_bytes);
-  return array_buffer;
+  return array_buffer->GetPPVar();
 }
 
 std::vector<PP_Var> VarTracker::GetLiveVars() {