ui::ContextFactory should not create SurfaceIdAllocators

content/browser/compositor/gpu_process_transport_factory.cc

Index: content/browser/compositor/gpu_process_transport_factory.cc
diff --git a/content/browser/compositor/gpu_process_transport_factory.cc b/content/browser/compositor/gpu_process_transport_factory.cc
index af1f5fe02afd3f6310508fd9b37ed3e7108bedfa..1827ba8e32b78a4ab0275d5bd0b2b2a916bda4f8 100644
--- a/content/browser/compositor/gpu_process_transport_factory.cc
+++ b/content/browser/compositor/gpu_process_transport_factory.cc
@@ -690,13 +690,8 @@ ui::ContextFactory* GpuProcessTransportFactory::GetContextFactory() {
   return this;
 }
 
-std::unique_ptr<cc::SurfaceIdAllocator>
-GpuProcessTransportFactory::CreateSurfaceIdAllocator() {
-  std::unique_ptr<cc::SurfaceIdAllocator> allocator =
-      base::WrapUnique(new cc::SurfaceIdAllocator(next_surface_client_id_++));
-  if (GetSurfaceManager())
-    allocator->RegisterSurfaceClientId(GetSurfaceManager());
-  return allocator;
+uint32_t GpuProcessTransportFactory::AllocateSurfaceClientId() {
+  return next_surface_client_id_++;
 }
 
 void GpuProcessTransportFactory::ResizeDisplay(ui::Compositor* compositor,