Use mus::MojoGpuMemoryBufferManager in mus::GpuService.

components/mus/common/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/ui.gni")
 import("//mojo/public/mojo_application_manifest.gni")
 import("//testing/test.gni")
 
 component("mus_common") {
   sources = [
     "event_matcher_util.cc",
     "event_matcher_util.h",
     "event_param_traits.cc",
     "event_param_traits.h",
     "event_param_traits_macros.h",
+    "gpu_memory_buffer_impl.cc",
+    "gpu_memory_buffer_impl.h",
     "gpu_type_converters.cc",
     "gpu_type_converters.h",
+    "mojo_buffer_backing.cc",
+    "mojo_buffer_backing.h",
+    "mojo_gpu_memory_buffer.cc",
+    "mojo_gpu_memory_buffer.h",
+    "mojo_gpu_memory_buffer_manager.cc",
+    "mojo_gpu_memory_buffer_manager.h",
     "mus_common_export.h",
     "switches.cc",
     "switches.h",
     "transient_window_utils.h",
     "types.h",
     "util.h",
   ]
 
   defines = [ "MUS_COMMON_IMPLEMENTATION" ]
 
@@ skipping 48 matching lines @@
     "//ui/events:events",
     "//ui/gfx:test_support",
     "//ui/gfx/ipc",
   ]
 }
 
 mojo_application_manifest("mus_common_unittests_app_manifest") {
   application_name = "mus_common_unittests_app"
   source = "mus_common_unittests_app_manifest.json"
 }