Add a floating close button for arc custom notification

components/arc/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/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 static_library("arc") {
   sources = [
     "arc_bridge_bootstrap.cc",
     "arc_bridge_bootstrap.h",
-    "arc_bridge_service.cc",
-    "arc_bridge_service.h",
     "arc_bridge_service_impl.cc",
     "arc_bridge_service_impl.h",
-    "arc_service.cc",
-    "arc_service.h",
     "arc_service_manager.cc",
     "arc_service_manager.h",
     "audio/arc_audio_bridge.cc",
     "audio/arc_audio_bridge.h",
-    "bitmap/bitmap_type_converters.cc",
-    "bitmap/bitmap_type_converters.h",
     "bluetooth/arc_bluetooth_bridge.cc",
     "bluetooth/arc_bluetooth_bridge.h",
     "bluetooth/bluetooth_type_converters.cc",
     "bluetooth/bluetooth_type_converters.h",
     "clipboard/arc_clipboard_bridge.cc",
     "clipboard/arc_clipboard_bridge.h",
     "crash_collector/arc_crash_collector_bridge.cc",
     "crash_collector/arc_crash_collector_bridge.h",
     "ime/arc_ime_bridge.h",
     "ime/arc_ime_bridge_impl.cc",
@@ skipping 24 matching lines @@
     "set_wallpaper_delegate.h",
     "storage_manager/arc_storage_manager.cc",
     "storage_manager/arc_storage_manager.h",
     "user_data/arc_user_data_service.cc",
     "user_data/arc_user_data_service.h",
     "window_manager/arc_window_manager_bridge.cc",
     "window_manager/arc_window_manager_bridge.h",
   ]
 
   deps = [
+    ":arc_base",
     "//ash:ash",
     "//base",
     "//chromeos",
     "//chromeos:power_manager_proto",
     "//components/exo",
     "//components/google/core/browser",
     "//components/onc",
     "//components/prefs",
     "//components/signin/core/account_id",
     "//components/user_manager",
@@ skipping 12 matching lines @@
     "//ui/events:dom_keycode_converter",
     "//ui/keyboard:keyboard",
     "//url:url",
   ]
 
   public_deps = [
     ":arc_bindings",
   ]
 }
 
+static_library("arc_base") {
+  sources = [
+    "arc_bridge_service.cc",
+    "arc_bridge_service.h",
+    "arc_service.cc",
+    "arc_service.h",
+  ]
+
+  deps = [
+    "//base",
+    "//chromeos",
+  ]
+
+  public_deps = [
+    ":arc_bindings",
+  ]
+}
+
+static_library("arc_bitmap") {
+  sources = [
+    "bitmap/bitmap_type_converters.cc",
+    "bitmap/bitmap_type_converters.h",
+  ]
+
+  deps = [
+    "//skia",
+  ]
+
+  public_deps = [
+    ":arc_bindings",
+  ]
+}
+
 mojom("arc_bindings") {
   sources = [
     "common/app.mojom",
     "common/arc_bridge.mojom",
     "common/audio.mojom",
     "common/auth.mojom",
     "common/bitmap.mojom",
     "common/bluetooth.mojom",
     "common/clipboard.mojom",
     "common/crash_collector.mojom",
@@ skipping 32 matching lines @@
     "test/fake_arc_bridge_service.cc",
     "test/fake_arc_bridge_service.h",
     "test/fake_notifications_instance.cc",
     "test/fake_notifications_instance.h",
     "test/fake_policy_instance.cc",
     "test/fake_policy_instance.h",
   ]
 
   deps = [
     ":arc",
+    ":arc_base",
     ":arc_bindings",
     "//base",
     "//mojo/common:common_base",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "arc_bridge_service_unittest.cc",
@@ skipping 64 matching lines @@
   ]
 
   deps = [
     ":arc_standalone",
     ":arc_standalone_service",
     "//base",
     "//ipc:ipc",
     "//mojo/edk/system",
   ]
 }