Move //mojo/examples to //examples

examples/nesting_app/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.
 
 shared_library("nesting_app") {
   sources = [
     "nesting_app.cc"
   ]
 
   deps = [
     "//base",
+    "//examples/bitmap_uploader",
+    "//examples/window_manager:bindings",
     "//mojo/application",
-    "//mojo/examples/bitmap_uploader",
-    "//mojo/examples/window_manager:bindings",
     "//mojo/public/c/system:for_shared_library",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/utility",
     "//mojo/services/public/cpp/view_manager",
     "//mojo/services/public/interfaces/geometry",
     "//mojo/services/public/interfaces/navigation",
     "//ui/gfx/geometry",
     "//ui/gl",
     "//url",
   ]
 }