Create //components/viz/frame_sinks and move code.

components/viz/frame_sinks/BUILD.gn

+# Copyright 2017 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.
+
+source_set("frame_sinks") {
+  sources = [
+    "display_provider.h",
+    "gpu_compositor_frame_sink.cc",
+    "gpu_compositor_frame_sink.h",
+    "gpu_compositor_frame_sink_delegate.h",
+    "gpu_root_compositor_frame_sink.cc",
+    "gpu_root_compositor_frame_sink.h",
+    "mojo_frame_sink_manager.cc",
+    "mojo_frame_sink_manager.h",
+  ]
+
+  deps = [
+    "//base",
+    "//cc",
+    "//cc/ipc:interfaces",
+    "//cc/surfaces",
+    "//components/display_compositor",
+    "//gpu/ipc:command_buffer",
+  ]
+}