Stop linking in the old Mojo EDK.

components/arc/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("//mojo/public/tools/bindings/mojom.gni")
 
 static_library("arc") {
   sources = [
     "arc_bridge_bootstrap.cc",
     "arc_bridge_bootstrap.h",
@@ skipping 23 matching lines @@
   ]
 
   deps = [
     "//base",
     "//base:prefs",
     "//chromeos",
     "//chromeos:power_manager_proto",
     "//components/signin/core/account_id",
     "//ipc:ipc",
     "//ipc/mojo:mojo",
-    "//third_party/mojo/src/mojo/edk/system",
+    "//mojo/edk/system",
     "//ui/arc",
     "//ui/aura",
     "//ui/base:base",
     "//ui/base/ime",
     "//ui/events",
     "//ui/events:dom_keycode_converter",
   ]
 
   public_deps = [
     ":arc_bindings",
@@ skipping 49 matching lines @@
     "//chromeos",
     "//ipc/mojo:mojo",
     "//mojo/public/cpp/environment:environment",
     "//mojo/public/cpp/system:system",
     "//testing/gtest",
     "//ui/aura",
     "//ui/events",
     "//ui/events:dom_keycode_converter",
   ]
 }