exo: Add support for alpha_compositing interface to wayland bindings.

components/exo/wayland/BUILD.gn

 # Copyright 2015 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.
 
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
 
 if (use_xkbcommon) {
   pkg_config("xkbcommon") {
     packages = [ "xkbcommon" ]
@@ skipping 16 matching lines @@
 
   defines = [ "EXO_IMPLEMENTATION" ]
 
   deps = [
     "//ash",
     "//base",
     "//components/exo",
     "//ipc:ipc",
     "//skia",
     "//third_party/wayland:wayland_server",
+    "//third_party/wayland-protocols:alpha_compositing_protocol",
     "//third_party/wayland-protocols:scaler_protocol",
     "//third_party/wayland-protocols:secure_output_protocol",
     "//third_party/wayland-protocols:xdg_shell_protocol",
     "//ui/events:dom_keycode_converter",
     "//ui/events:events_base",
     "//ui/views",
   ]
 
   if (use_ozone) {
     deps += [
@@ skipping 18 matching lines @@
   ]
 
   deps = [
     ":wayland",
     "//base",
     "//components/exo",
     "//testing/gtest",
     "//third_party/wayland:wayland_client",
   ]
 }