Introducing gpu::CommandBufferId as a distinct, IdType<...>-based type.

ppapi/proxy/ppapi_command_buffer_proxy.cc

 // Copyright (c) 2012 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/proxy/ppapi_command_buffer_proxy.h"
 
 #include <utility>
 
 #include "base/numerics/safe_conversions.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/api_id.h"
 #include "ppapi/shared_impl/host_resource.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 
 namespace ppapi {
 namespace proxy {
 
 PpapiCommandBufferProxy::PpapiCommandBufferProxy(
     const ppapi::HostResource& resource,
     PluginDispatcher* dispatcher,
     const gpu::Capabilities& capabilities,
     const SerializedHandle& shared_state,
-    uint64_t command_buffer_id)
+    gpu::CommandBufferId command_buffer_id)
     : command_buffer_id_(command_buffer_id),
       capabilities_(capabilities),
       resource_(resource),
       dispatcher_(dispatcher),
       next_fence_sync_release_(1),
       pending_fence_sync_release_(0),
       flushed_fence_sync_release_(0),
       validated_fence_sync_release_(0) {
   shared_state_shm_.reset(
       new base::SharedMemory(shared_state.shmem(), false));
@@ skipping 154 matching lines @@
   DCHECK_GE(flushed_fence_sync_release_, validated_fence_sync_release_);
   Send(new PpapiHostMsg_PPBGraphics3D_EnsureWorkVisible(
       ppapi::API_ID_PPB_GRAPHICS_3D, resource_));
   validated_fence_sync_release_ = flushed_fence_sync_release_;
 }
 
 gpu::CommandBufferNamespace PpapiCommandBufferProxy::GetNamespaceID() const {
   return gpu::CommandBufferNamespace::GPU_IO;
 }
 
-uint64_t PpapiCommandBufferProxy::GetCommandBufferID() const {
+gpu::CommandBufferId PpapiCommandBufferProxy::GetCommandBufferID() const {
   return command_buffer_id_;
 }
 
 uint64_t PpapiCommandBufferProxy::GenerateFenceSyncRelease() {
   return next_fence_sync_release_++;
 }
 
 bool PpapiCommandBufferProxy::IsFenceSyncRelease(uint64_t release) {
   return release != 0 && release < next_fence_sync_release_;
 }
@@ skipping 112 matching lines @@
   message->set_unblock(true);
   Send(message);
 
   flush_info_->flush_pending = false;
   flush_info_->resource.SetHostResource(0, 0);
   flushed_fence_sync_release_ = pending_fence_sync_release_;
 }
 
 }  // namespace proxy
 }  // namespace ppapi