Implement ui::ClipboardMus.

ui/views/mus/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/features.gni")
 import("//build/config/ui.gni")
 import("//mojo/public/mojo_application.gni")
 import("//mojo/public/mojo_application_manifest.gni")
 import("//testing/test.gni")
 import("//tools/grit/repack.gni")
 
 component("mus") {
   output_name = "ui_views_mus_lib"
 
   sources = [
     "aura_init.cc",
     "aura_init.h",
+    "clipboard_mus.cc",
+    "clipboard_mus.h",
     "display_list.cc",
     "display_list.h",
     "input_method_mus.cc",
     "input_method_mus.h",
     "mus_export.h",
     "native_widget_mus.cc",
     "native_widget_mus.h",
     "platform_window_mus.cc",
     "platform_window_mus.h",
     "screen_mus.cc",
@@ skipping 24 matching lines @@
     "//base",
     "//base:i18n",
     "//base/third_party/dynamic_annotations",
     "//cc",
     "//cc/surfaces",
     "//components/bitmap_uploader",
     "//components/mus/gles2:lib",
     "//components/mus/public/cpp",
     "//components/mus/public/cpp/surfaces",
     "//components/mus/public/interfaces",
+    "//mojo/common",
     "//mojo/public/c/system:for_component",
     "//mojo/public/cpp/bindings",
     "//services/catalog/public/cpp",
     "//services/shell/public/cpp",
     "//services/shell/public/interfaces",
     "//skia",
     "//third_party/icu",
     "//ui/aura",
     "//ui/compositor",
     "//ui/display",
@@ skipping 165 matching lines @@
 
 # Tests that must run sequentially because they access system-wide features
 # like capture.
 test("views_mus_interactive_ui_tests") {
   testonly = true
 
   configs += [ "//build/config:precompiled_headers" ]
 
   sources = [
     "../widget/widget_interactive_uitest.cc",
+    "clipboard_unittest.cc",
     "interactive_ui_tests_mus.cc",
   ]
 
   deps = [
     ":mus",
     ":test_support",
     "//base",
     "//services/shell/background:main",  # Provides main().
+    "//testing/gmock",
+    "//testing/gtest",
     "//ui/aura",
     "//ui/base",
     "//ui/base/ime",
     "//ui/events:events_base",
     "//ui/events:test_support",
     "//ui/gl:test_support",
     "//ui/touch_selection",
     "//ui/views",
     "//ui/views:test_support_internal",
     "//ui/wm",
@@ skipping 28 matching lines @@
   type = "exe"
   application_name = "views_mus_interactive_ui_tests"
   source = "interactive_ui_tests_manifest.json"
 }
 
 group("for_component") {
   public_deps = [
     ":mus",
   ]
 }