Add VaapiVideoDecode flags for Chromium and Brave by default

Closes #1011

config/brave-flags.conf

@@ -1,4 +1,4 @@
 --ozone-platform=wayland
 --ozone-platform-hint=wayland
---enable-features=TouchpadOverscrollHistoryNavigation
+--enable-features=TouchpadOverscrollHistoryNavigation,VaapiVideoDecodeLinuxGL,VaapiVideoEncoder
 --load-extension=~/.local/share/omarchy/default/chromium/extensions/copy-url

config/chromium-flags.conf

@@ -1,4 +1,4 @@
 --ozone-platform=wayland
 --ozone-platform-hint=wayland
---enable-features=TouchpadOverscrollHistoryNavigation
+--enable-features=TouchpadOverscrollHistoryNavigation,VaapiVideoDecodeLinuxGL,VaapiVideoEncoder
 --load-extension=~/.local/share/omarchy/default/chromium/extensions/copy-url

migrations/1777800806.sh

@@ -0,0 +1,20 @@
+echo "Enable VAAPI hardware video decoding/encoding in Chromium and Brave for h265 and other codecs"
+
+add_flag() {
+  local file=$1
+  local flag=$2
+
+  [[ -f $file ]] || return
+  grep -q "$flag" "$file" && return
+
+  if grep -q "^--enable-features=" "$file"; then
+    sed -i "s/^--enable-features=\(.*\)$/--enable-features=\1,$flag/" "$file"
+  else
+    echo "--enable-features=$flag" >>"$file"
+  fi
+}
+
+for conf in chromium-flags.conf brave-flags.conf; do
+  add_flag "$HOME/.config/$conf" "VaapiVideoDecodeLinuxGL"
+  add_flag "$HOME/.config/$conf" "VaapiVideoEncoder"
+done