Remove the keyboard from the browser demo.

examples/keyboard/BUILD.gn

Index: examples/keyboard/BUILD.gn
diff --git a/examples/keyboard/BUILD.gn b/examples/keyboard/BUILD.gn
deleted file mode 100644
index e0d8e7d290b7665e790128f89198a3ab57f6422e..0000000000000000000000000000000000000000
--- a/examples/keyboard/BUILD.gn
+++ /dev/null
@@ -1,52 +0,0 @@
-# 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")
-
-assert(use_aura)
-
-mojo_native_application("keyboard") {
-  sources = [
-    "keyboard_delegate.h",
-    "keyboard_view.cc",
-    "keyboard_view.h",
-    "keyboard.cc",
-    "keys.cc",
-    "keys.h",
-  ]
-
-  deps = [
-    ":bindings",
-    "//base",
-    "//cc",
-    "//mojo/application",
-    "//mojo/aura",
-    "//mojo/common",
-    "//mojo/converters/geometry",
-    "//mojo/converters/input_events",
-    "//mojo/services/geometry/public/interfaces",
-    "//mojo/services/navigation/public/interfaces",
-    "//mojo/services/view_manager/public/cpp",
-    "//mojo/services/view_manager/public/interfaces",
-    "//mojo/views:views",
-    "//third_party/icu",
-    "//ui/aura",
-    "//ui/base",
-    "//ui/compositor",
-    "//ui/gfx",
-    "//ui/gfx/geometry",
-    "//ui/resources",
-    "//ui/resources:ui_test_pak",
-    "//ui/views",
-    "//url",
-  ]
-}
-
-mojom("bindings") {
-  sources = [
-    "keyboard.mojom",
-  ]
-}