Remove IS_CHROMEOS_ASH from //components/*
This cleans up the following subdirectories: sessions,
soda, storage_monitor, supervised_user, sync_preferences,
system_media_controls, translate, trusted_vault,
unified_consent, update_client, user_manager,
vector_icons, version_ui, web_resource
1) Removed IS_CHROMEOS_LACROS usages and code it guarded
2) Renamed IS_CHROMEOS_ASH to IS_CHROMEOS
3) Removed chromeos_buildflags.h includes
4) Cleaned up *.gn files from IS_CHROMEOS_*.
Bug: 375523816, 373972275, 373971535
Change-Id: I973920d2078526bede68a84dbea53029d202c22d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6097194
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Maksim Sisov <msisov@igalia.com>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1397771}
764f01d25d