Make Mac swap code like other platforms

gpu/ipc/client/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 
 group("client") {
   if (is_component_build) {
     public_deps = [
       "//gpu",
@@ skipping 13 matching lines @@
     "gpu_channel_host.h",
     "gpu_memory_buffer_impl.cc",
     "gpu_memory_buffer_impl.h",
     "gpu_memory_buffer_impl_shared_memory.cc",
     "gpu_memory_buffer_impl_shared_memory.h",
   ]
   if (is_mac) {
     sources += [
       "gpu_memory_buffer_impl_io_surface.cc",
       "gpu_memory_buffer_impl_io_surface.h",
+      "gpu_process_hosted_ca_layer_tree_params.cc",
+      "gpu_process_hosted_ca_layer_tree_params.h",
     ]
   }
   if (is_android) {
     sources += [
       "android/in_process_surface_texture_manager.cc",
       "android/in_process_surface_texture_manager.h",
       "gpu_memory_buffer_impl_surface_texture.cc",
       "gpu_memory_buffer_impl_surface_texture.h",
     ]
     libs = [ "android" ]
@@ skipping 18 matching lines @@
     "//ui/events/ipc",
     "//ui/gfx/ipc",
     "//ui/gfx/ipc/geometry",
     "//ui/gl",
     "//url/ipc:url_ipc",
   ]
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
   }
 }