exp/wip: Use ServerGpuMemoryBufferManager in browser.

services/ui/ws/gpu_host.cc

Index: services/ui/ws/gpu_host.cc
diff --git a/services/ui/ws/gpu_host.cc b/services/ui/ws/gpu_host.cc
index 466c1ef02b6ceda6b3827817fb2f1121731c9351..cbd53a7ab83cb52e6c83542b14c6693c307c53b7 100644
--- a/services/ui/ws/gpu_host.cc
+++ b/services/ui/ws/gpu_host.cc
@@ -51,8 +51,8 @@ DefaultGpuHost::DefaultGpuHost(GpuHostDelegate* delegate)
                               std::move(gpu_host_proxy), preferences,
                               mojo::ScopedSharedBufferHandle());
   gpu_memory_buffer_manager_ =
-      base::MakeUnique<viz::ServerGpuMemoryBufferManager>(gpu_service_.get(),
-                                                          next_client_id_++);
+      base::MakeRefCounted<viz::ServerGpuMemoryBufferManager>(
+          gpu_service_.get(), next_client_id_++);
 }
 
 DefaultGpuHost::~DefaultGpuHost() {}