services/ui: Split GpuServiceInternal into gpu vs. ws pieces.

services/ui/gpu/interfaces/gpu_service_internal.mojom

Index: services/ui/gpu/interfaces/gpu_service_internal.mojom
diff --git a/services/ui/gpu/interfaces/gpu_service_internal.mojom b/services/ui/gpu/interfaces/gpu_service_internal.mojom
index 9902b30ea85cf699e19a3aef08e37b61b0d8cef0..4b6b00c5e83b54152254c06c4160b8c3e4fe13a1 100644
--- a/services/ui/gpu/interfaces/gpu_service_internal.mojom
+++ b/services/ui/gpu/interfaces/gpu_service_internal.mojom
@@ -11,6 +11,8 @@ interface GpuServiceInternal {
 
   // Tells the GPU service to create a new channel for communication with a
   // client. The GPU service responds with an IPC handle.
-  EstablishGpuChannel(int32 client_id, uint64 client_tracing_id)
+  EstablishGpuChannel(int32 client_id,
+                      uint64 client_tracing_id,
+                      bool privileged)
       => (handle<message_pipe> channel_handle);
 };