Implement in-process PPB_VarArrayBuffer_Dev.

ppapi/shared_impl/var_tracker.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/shared_impl/var_tracker.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "ppapi/shared_impl/id_assignment.h"
@@ skipping 120 matching lines @@
 VarTracker::VarMap::iterator VarTracker::GetLiveVar(const PP_Var& var) {
   return live_vars_.find(static_cast<int32>(var.value.as_id));
 }
 
 VarTracker::VarMap::const_iterator VarTracker::GetLiveVar(
     const PP_Var& var) const {
   return live_vars_.find(static_cast<int32>(var.value.as_id));
 }
 
 bool VarTracker::IsVarTypeRefcounted(PP_VarType type) const {
-  return type == PP_VARTYPE_STRING || type == PP_VARTYPE_OBJECT;
+  return type >= PP_VARTYPE_STRING;
+}
+
+PP_Var VarTracker::MakeArrayBufferPPVar(uint32 size_in_bytes) {
+  scoped_refptr<ArrayBufferVar> array_buffer(CreateArrayBuffer(size_in_bytes));
+  if (!array_buffer)
+    return PP_MakeNull();
+  return array_buffer->GetPPVar();
 }
 
 void VarTracker::TrackedObjectGettingOneRef(VarMap::const_iterator obj) {
   // Anybody using tracked objects should override this.
   NOTREACHED();
 }
 
 void VarTracker::ObjectGettingZeroRef(VarMap::iterator iter) {
   DeleteObjectInfoIfNecessary(iter);
 }
 
 bool VarTracker::DeleteObjectInfoIfNecessary(VarMap::iterator iter) {
   if (iter->second.ref_count != 0 ||
       iter->second.track_with_no_reference_count != 0)
     return false;  // Object still alive.
   live_vars_.erase(iter);
   return true;
 }
 
 }  // namespace ppapi