Delete dead (and obsolete) display compositor API

services/ui/gpu/display_compositor/compositor_frame_sink_factory_impl.cc

Index: services/ui/gpu/display_compositor/compositor_frame_sink_factory_impl.cc
diff --git a/services/ui/gpu/display_compositor/compositor_frame_sink_factory_impl.cc b/services/ui/gpu/display_compositor/compositor_frame_sink_factory_impl.cc
deleted file mode 100644
index c0ef962ed39d65f55b161edeed4ecda80bf23fd5..0000000000000000000000000000000000000000
--- a/services/ui/gpu/display_compositor/compositor_frame_sink_factory_impl.cc
+++ /dev/null
@@ -1,44 +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/compositor_frame_sink_factory_impl.h"
-
-#include "base/memory/ptr_util.h"
-#include "cc/surfaces/surface_id.h"
-#include "services/ui/gpu/display_compositor/compositor_frame_sink_impl.h"
-
-namespace ui {
-namespace gpu {
-
-CompositorFrameSinkFactoryImpl::CompositorFrameSinkFactoryImpl(
-    uint32_t client_id,
-    const scoped_refptr<DisplayCompositor>& display_compositor)
-    : client_id_(client_id),
-      display_compositor_(display_compositor),
-      allocator_(client_id) {}
-
-CompositorFrameSinkFactoryImpl::~CompositorFrameSinkFactoryImpl() {}
-
-void CompositorFrameSinkFactoryImpl::CompositorFrameSinkConnectionLost(
-    int local_id) {
-  sinks_.erase(local_id);
-}
-
-cc::SurfaceId CompositorFrameSinkFactoryImpl::GenerateSurfaceId() {
-  return allocator_.GenerateId();
-}
-
-void CompositorFrameSinkFactoryImpl::CreateCompositorFrameSink(
-    uint32_t local_id,
-    uint64_t nonce,
-    mojo::InterfaceRequest<mojom::CompositorFrameSink> sink,
-    mojom::CompositorFrameSinkClientPtr client) {
-  // TODO(fsamuel): Use nonce once patch lands:
-  // https://codereview.chromium.org/1996783002/
-  sinks_[local_id] = base::MakeUnique<CompositorFrameSinkImpl>(
-      this, local_id, display_compositor_, std::move(sink), std::move(client));
-}
-
-}  // namespace gpu
-}  // namespace ui