Use mojo for cursor control in ozone drm

ui/ozone/public/interfaces/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("//mojo/public/tools/bindings/mojom.gni")
 
-mojom("mojo") {
+mojom("interfaces") {
   sources = [
-    "input_devices.mojom",
+    "device_cursor.mojom",
+  ]
+
+  import_dirs = [
+    get_path_info("../../../..", "abspath"),

[Ken Rockot(use gerrit already), 2016/07/21 19:12:29]

... Is this really necessary?

+    "//mojo/services",
   ]
 
   public_deps = [
+    "//skia/public/interfaces:interfaces",
+    "//skia/public/interfaces:mojo",
     "//ui/gfx/geometry/mojo",
+    "//ui/gfx/mojo",
   ]
 }
-
-mojom("test_interfaces") {
-  sources = [
-    "device_struct_traits_test.mojom",
-  ]
-
-  public_deps = [
-    ":mojo",
-  ]
-}