Add SkBitmap StructTraits for skia::mojo::Bitmap.

mash/wm/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.gni")
 import("//mojo/public/mojo_application_manifest.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//tools/grit/repack.gni")
 
@@ skipping 69 matching lines @@
     "window_manager_application.h",
   ]
 
   deps = [
     "//ash",
     "//base",
     "//components/mus/common:mus_common",
     "//components/mus/public/cpp",
     "//components/mus/public/interfaces",
     "//mash/session/public/interfaces",
-    "//mash/wm/public/interfaces",
     "//mash/wm/resources",
     "//mojo/common:common_base",
     "//services/shell/public/cpp",
     "//services/tracing/public/cpp",
     "//skia",
     "//ui/aura",
     "//ui/display/mojo",
     "//ui/events",
     "//ui/events/mojo",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/gfx/geometry/mojo",
     "//ui/resources",
     "//ui/strings",
     "//ui/views",
     "//ui/views/mus:for_mojo_application",
   ]
+
+  public_deps = [
+    "//mash/wm/public/interfaces",
+  ]
 }
 
 mojo_native_application("wm") {
   output_name = "desktop_wm"
 
   sources = [
     "main.cc",
   ]
 
   deps = [
@@ skipping 79 matching lines @@
     "//ui/gfx/geometry",
     "//ui/gfx/geometry/mojo",
     "//ui/views/mus",
   ]
 
   data_deps = [
     ":wm",
     "//mash/quick_launch",
   ]
 }