Delete dead (and obsolete) display compositor API

services/ui/gpu/display_compositor/display_compositor_impl.cc

Index: services/ui/gpu/display_compositor/display_compositor_impl.cc
diff --git a/services/ui/gpu/display_compositor/display_compositor_impl.cc b/services/ui/gpu/display_compositor/display_compositor_impl.cc
deleted file mode 100644
index 3f6ac8172bd4a428f28f11148ff3e46ea450b2b0..0000000000000000000000000000000000000000
--- a/services/ui/gpu/display_compositor/display_compositor_impl.cc
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2016 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 "services/ui/gpu/display_compositor/display_compositor_impl.h"
-
-#include "services/ui/gpu/display_compositor/display_impl.h"
-
-namespace ui {
-namespace gpu {
-
-DisplayCompositorImpl::DisplayCompositorImpl() {}
-
-DisplayCompositorImpl::~DisplayCompositorImpl() {}
-
-void DisplayCompositorImpl::CreateDisplay(
-    int accelerated_widget,
-    mojo::InterfaceRequest<mojom::Display> display,
-    mojom::DisplayHostPtr host,
-    mojo::InterfaceRequest<mojom::CompositorFrameSink> sink,
-    mojom::CompositorFrameSinkClientPtr client) {
-  NOTIMPLEMENTED();
-}
-
-}  // namespace gpu
-}  // namespace ui