Added a unique command buffer ID for command buffers.

components/mus/gles2/command_buffer_local.cc

Index: components/mus/gles2/command_buffer_local.cc
diff --git a/components/mus/gles2/command_buffer_local.cc b/components/mus/gles2/command_buffer_local.cc
index 3d2ac952b8f3462c02ad99063885ee178a176700..4581db89d8f3b28c579a864035eb1e6f00a64aa2 100644
--- a/components/mus/gles2/command_buffer_local.cc
+++ b/components/mus/gles2/command_buffer_local.cc
@@ -212,6 +212,16 @@ bool CommandBufferLocal::IsGpuChannelLost() {
   return false;
 }
 
+gpu::CommandBufferNamespace CommandBufferLocal::GetNamespaceID() const {
+  NOTIMPLEMENTED();

[sky, 2015/09/17 17:03:06]

Are these going to be spammy? What is the consequence of not implementing this?

[David Yen, 2015/09/17 17:07:04]

These are going to be used for a new sync point implementation, so sync points
will not work. However, since the old sync points were already NOTIMPLEMENTED()
it should be safe to assume they aren't used.

+  return gpu::kCommandBufferNamespace_Invalid;
+}
+
+uint64_t CommandBufferLocal::GetCommandBufferID() const {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
 void CommandBufferLocal::PumpCommands() {
   if (!decoder_->MakeCurrent()) {
     command_buffer_->SetContextLostReason(decoder_->GetContextLostReason());