Add a floating close button for arc custom notification

components/arc.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //components/arc
       'target_name': 'arc',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
+        'arc_base',
         'arc_mojo_bindings',
         'components.gyp:exo',
         'components.gyp:onc_component',
         '../base/base.gyp:base',
         '../chromeos/chromeos.gyp:chromeos',
         '../chromeos/chromeos.gyp:power_manager_proto',
         '../ipc/ipc.gyp:ipc',
         '../third_party/re2/re2.gyp:re2',
         '../skia/skia.gyp:skia',
         '../ui/arc/arc.gyp:arc',
         '../ui/aura/aura.gyp:aura',
         '../ui/base/ime/ui_base_ime.gyp:ui_base_ime',
         '../ui/base/ui_base.gyp:ui_base',
         '../ui/base/ui_base.gyp:ui_base_test_support',
         '../ui/events/events.gyp:events_base',
         '../ui/keyboard/keyboard.gyp:keyboard',
         '../url/url.gyp:url_lib',
       ],
       'sources': [
         'arc/arc_bridge_bootstrap.cc',
         'arc/arc_bridge_bootstrap.h',
-        'arc/arc_bridge_service.cc',
-        'arc/arc_bridge_service.h',
         'arc/arc_bridge_service_impl.cc',
         'arc/arc_bridge_service_impl.h',
-        'arc/arc_service.cc',
-        'arc/arc_service.h',
         'arc/arc_service_manager.cc',
         'arc/arc_service_manager.h',
         'arc/audio/arc_audio_bridge.cc',
         'arc/audio/arc_audio_bridge.h',
-        'arc/bitmap/bitmap_type_converters.cc',
-        'arc/bitmap/bitmap_type_converters.h',
         'arc/bluetooth/arc_bluetooth_bridge.cc',
         'arc/bluetooth/arc_bluetooth_bridge.h',
         'arc/bluetooth/bluetooth_type_converters.cc',
         'arc/bluetooth/bluetooth_type_converters.h',
         'arc/clipboard/arc_clipboard_bridge.cc',
         'arc/clipboard/arc_clipboard_bridge.h',
         'arc/crash_collector/arc_crash_collector_bridge.cc',
         'arc/crash_collector/arc_crash_collector_bridge.h',
         'arc/ime/arc_ime_bridge.h',
         'arc/ime/arc_ime_bridge_impl.cc',
@@ skipping 24 matching lines @@
         'arc/set_wallpaper_delegate.h',
         'arc/storage_manager/arc_storage_manager.cc',
         'arc/storage_manager/arc_storage_manager.h',
         'arc/user_data/arc_user_data_service.cc',
         'arc/user_data/arc_user_data_service.h',
         'arc/window_manager/arc_window_manager_bridge.cc',
         'arc/window_manager/arc_window_manager_bridge.h',
       ],
     },
     {
+      # GN version: //components/arc:arc_base
+      'target_name': 'arc_base',
+      'type': 'static_library',
+      'include_dirs': [
+        '..',
+      ],
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../chromeos/chromeos.gyp:chromeos',
+        '../skia/skia.gyp:skia',
+      ],
+      'sources': [
+        'arc/arc_bridge_service.cc',
+        'arc/arc_bridge_service.h',
+        'arc/arc_service.cc',
+        'arc/arc_service.h',
+        'arc/bitmap/bitmap_type_converters.cc',
+        'arc/bitmap/bitmap_type_converters.h',
+      ],
+    },
+    {
       # GN version: //components/arc_test_support
       'target_name': 'arc_test_support',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         'arc',
         'arc_mojo_bindings',
@@ skipping 98 matching lines @@
         '../base/base.gyp:base',
         '../ipc/ipc.gyp:ipc',
         '../mojo/mojo_edk.gyp:mojo_system_impl',
       ],
       'sources': [
         'arc/standalone/arc_standalone_bridge_main.cc',
       ]
     }
   ],
 }