fatal error: 'media/gpu/v4l2/v4l2_stubs.h' file not found

[lilulu2018]

fatal error: 'media/gpu/v4l2/v4l2_stubs.h' file not found

[JeffyCN]

the rule to generate it is added in the patch 0003*

[JeffyCN]

maybe you didn't enable the 'use libv4l plugin' switch? please check the related bbappend for tested configuration

[lilulu2018]

@JeffyCN all patches are applied including patch 0006 not applicable so I manually modified files affected. use_v4l2_codec = true and use_vaapi = false added to args.gn, but still getting this error. Here is what exactly I have done:
system ubuntu 22.04

1. git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
2. export PATH="${HOME}/depot_tools:$PATH"
3. mkdir ~/chromium && cd ~/chromium
4. fetch --nohooks chromium
5. cd src
6. git checkout -b v120 tags/120.0.6099.291
7. gclient sync
8. ./build/install-build-deps.sh
9. ./build/linux/sysroot_scripts/install-sysroot.py --arch=arm64
10. apply patches from dynamic-layers/recipes-browser/chromium/chromium_120.0.6099
11. gn gen out/Arm64
12. edit args.gn as below

# Set build arguments here. See `gn help buildargs`.
target_cpu = "arm64"
enable_nacl = false
symbol_level = 0
blink_symbol_level = 0
v8_symbol_level = 0
is_official_build = true
chrome_pgo_phase = 0
use_v4l2_codec = true
use_vaapi = false

Then I run autoninja -C out/Arm64 chrome from src directory and get this error. Is there anything I've done wrong or missing anything ？

[JeffyCN]

check:
https://github.com/JeffyCN/meta-rockchip/blob/master/dynamic-layers/recipes-browser/chromium/chromium-%25.bbappend#L9
use_v4lplugin=true

[lilulu2018]

added use_v4lplugin = trueresolved my problem