viz: Move some code into //components/viz/common.

services/ui/ws/gpu_host.h

Index: services/ui/ws/gpu_host.h
diff --git a/services/ui/ws/gpu_host.h b/services/ui/ws/gpu_host.h
index 5bb7faf83d36250eb7e5dcd53d3d91956141655c..3a92a932ef97a704ce57b2b4dd6c50f02200b50f 100644
--- a/services/ui/ws/gpu_host.h
+++ b/services/ui/ws/gpu_host.h
@@ -18,9 +18,11 @@
 #include "services/ui/gpu/interfaces/gpu_service.mojom.h"
 #include "services/ui/public/interfaces/gpu.mojom.h"
 
-namespace ui {
-
+namespace viz {
 class ServerGpuMemoryBufferManager;
+}
+
+namespace ui {
 
 namespace ws {
 
@@ -93,7 +95,7 @@ class DefaultGpuHost : public GpuHost, public mojom::GpuHost {
   mojom::GpuServicePtr gpu_service_;
   mojo::Binding<mojom::GpuHost> gpu_host_binding_;
   gpu::GPUInfo gpu_info_;
-  std::unique_ptr<ServerGpuMemoryBufferManager> gpu_memory_buffer_manager_;
+  std::unique_ptr<viz::ServerGpuMemoryBufferManager> gpu_memory_buffer_manager_;
 
   mojom::GpuMainPtr gpu_main_;