[Mac] Wrap NSUserActivity begin/end so that it can be called from common files

content/common/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("features.gni")
 import("//build/buildflag_header.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
@@ skipping 186 matching lines @@
     "input/synthetic_web_input_event_builders.h",
     "input/touch_event_stream_validator.cc",
     "input/touch_event_stream_validator.h",
     "input/web_touch_event_traits.cc",
     "input/web_touch_event_traits.h",
     "input_messages.h",
     "inter_process_time_ticks_converter.cc",
     "inter_process_time_ticks_converter.h",
     "layer_tree_settings_factory.cc",
     "layer_tree_settings_factory.h",
+    "mac/app_nap_activity.h",
+    "mac/app_nap_activity.mm",
     "mac/attributed_string_coder.h",
     "mac/attributed_string_coder.mm",
     "mac/font_descriptor.h",
     "mac/font_descriptor.mm",
     "mac/font_loader.h",
     "mac/font_loader.mm",
     "manifest_manager_messages.h",
     "media/aec_dump_messages.h",
     "media/audio_messages.h",
     "media/cdm_info.cc",
@@ skipping 429 matching lines @@
     "//ui/gfx/mojo",
     "//url/mojo:url_mojom_gurl",
     "//url/mojo:url_mojom_origin",
   ]
 
   component_output_prefix = "content_common_mojo_bindings"
   export_class_attribute = "CONTENT_EXPORT"
   export_define = "CONTENT_IMPLEMENTATION=1"
   export_header = "content/common/content_export.h"
 }