Added a unique command buffer ID for command buffers.

mojo/gles2/command_buffer_client_impl.cc

 // Copyright 2014 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 "mojo/gles2/command_buffer_client_impl.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/process/process_handle.h"
@@ skipping 378 matching lines @@
 }
 
 void CommandBufferClientImpl::SetLock(base::Lock* lock) {
 }
 
 bool CommandBufferClientImpl::IsGpuChannelLost() {
   // This is only possible for out-of-process command buffers.
   return false;
 }
 
+gpu::CommandBufferNamespace CommandBufferClientImpl::GetNamespaceID() const {
+  return gpu::CommandBufferNamespace::MOJO;
+}
+
+uint64_t CommandBufferClientImpl::GetCommandBufferID() const {
+  // TODO (rjkroege): This must correspond to the command buffer ID on the
+  // server side. Most likely a combination of the client-specific integer and
+  // the connect id.
+  NOTIMPLEMENTED();
+  return 0;
+}
+
 }  // namespace gles2