Reland: Remove aura and make a pure mojo::View version of FocusController.

sky/tools/debugger/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("//mojo/public/tools/bindings/mojom.gni")
 
 group("debugger") {
   testonly = true
 
   deps = [
     "//sky/tools/debugger/prompt",
     ":sky_debugger",
   ]
 }
 
 shared_library("sky_debugger") {
   sources = [
     "debugger.cc",
     "debugger.h",
-    "focus_rules.cc",
-    "focus_rules.h",
     "main.cc",
     "navigator_host_impl.cc",
     "navigator_host_impl.h",
   ]
 
   deps = [
     "//base",
     "//mojo/application",
     "//mojo/converters/geometry",
     "//mojo/converters/input_events",
     "//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/input_events:input_events",
     "//mojo/services/public/interfaces/navigation",
     "//mojo/services/window_manager:lib",
     "//sky/viewer:bindings",
-    "//ui/aura:aura",
-    "//ui/wm:wm",
     ":bindings",
   ]
 }
 
 mojom("bindings") {
   sources = [
     "debugger.mojom",
   ]
 }