Added support for getting and setting the CommandBuffer token and error....

o3d/gpu_plugin/command_buffer.cc

 // Copyright (c) 2006-2008 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 "o3d/gpu_plugin/command_buffer.h"
 
 namespace o3d {
 namespace gpu_plugin {
 
 CommandBuffer::CommandBuffer(NPP npp)
     : npp_(npp),
       size_(0),
       get_offset_(0),
-      put_offset_(0) {
+      put_offset_(0),
+      token_(0),
+      error_(ERROR_NO_ERROR) {
   // Element zero is always NULL.
   registered_objects_.push_back(NPObjectPointer<NPObject>());
 }
 
 CommandBuffer::~CommandBuffer() {
 }
 
 bool CommandBuffer::Initialize(int32 size) {
   if (shared_memory_.Get())
     return false;
@@ skipping 120 matching lines @@
   }
 }
 
 NPObjectPointer<NPObject> CommandBuffer::GetRegisteredObject(int32 handle) {
   DCHECK_GE(handle, 0);
   DCHECK_LT(static_cast<size_t>(handle), registered_objects_.size());
 
   return registered_objects_[handle];
 }
 
+int32 CommandBuffer::ResetError() {
+  int32 last_error = error_;
+  error_ = ERROR_NO_ERROR;
+  return last_error;
+}
+
 }  // namespace gpu_plugin
 }  // namespace o3d