Expose sky KeyboardService in android mojo_shell

sky/services/keyboard/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/android/config.gni")
 import("//build/config/android/rules.gni")
-import("//mojo/public/tools/bindings/mojom.gni")
 
 android_library("keyboard") {
   java_files = [
     "org/domokit/keyboard/InputConnectionAdaptor.java",
     "org/domokit/keyboard/KeyboardServiceImpl.java",
   ]
 
   deps = [
     "//mojo/public/java:bindings",
     "//mojo/public/java:system",
-    ":interfaces_java",
+    "//mojo/services/keyboard/public/interfaces:interfaces_java",
   ]
 }
-
-mojom("interfaces") {
-  sources = [
-    "keyboard.mojom",
-  ]
-}