Restructure public side of view_manager service.

examples/media_viewer/BUILD.gn

 # Copyright 2014 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/tools/bindings/mojom.gni")
 
 if (use_aura) {
   mojo_native_application("media_viewer") {
     sources = [
       "media_viewer.cc",
     ]
 
     deps = [
       ":bindings",
       "//base",
       "//mojo/application",
       "//mojo/converters/input_events",
-      "//mojo/services/public/cpp/view_manager",
       "//mojo/services/public/interfaces/navigation",
-      "//mojo/services/public/interfaces/view_manager",
+      "//mojo/services/view_manager/public/cpp",
+      "//mojo/services/view_manager/public/interfaces",
       "//mojo/views:views",
       "//skia",
       "//ui/gfx",
       "//ui/gfx/geometry",
       "//ui/views",
     ]
   }
 }  # use_aura
 
 mojom("bindings") {
   sources = [
     "media_viewer.mojom",
   ]
 }