mozart: Add a simple tiling view manager.

examples/ui/tile/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/mojo_application.gni")
 
-mojo_native_application("spinning_cube") {
-  output_name = "spinning_cube_view"
+mojo_native_application("tile") {
+  output_name = "tile_view"
 
   sources = [
     "main.cc",
-    "spinning_cube_app.cc",
-    "spinning_cube_app.h",
-    "spinning_cube_view.cc",
-    "spinning_cube_view.h",
+    "tile_app.cc",
+    "tile_app.h",
+    "tile_view.cc",
+    "tile_view.h",
   ]
 
   deps = [
     "//base",
-    "//examples/spinning_cube:lib",
     "//mojo/application",
     "//mojo/common",
     "//mojo/environment:chromium",
     "//mojo/gpu",
     "//mojo/public/c/gpu",
     "//mojo/public/c/gpu:gpu_onscreen",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/environment",
     "//mojo/public/cpp/system",
     "//mojo/services/geometry/interfaces",
     "//mojo/services/input_events/interfaces",
+    "//mojo/services/surfaces/cpp",
     "//mojo/services/surfaces/interfaces",
     "//mojo/services/ui/views/interfaces",
+    "//url",
   ]
 }