gn: Fix Chromium build #204

Job	Run time
mac	4m 50s
android	1m 58s
gn (Debug)	2m 20s
linux (gcc, g++, Debug, ubuntu-20.04, XCB)	1m 58s
gn (Release)	1m 54s
linux (gcc, g++, Debug, ubuntu-22.04, XCB)	1m 48s
windows (Win32, Debug, windows-latest)	5m 25s
linux (gcc, g++, Release, ubuntu-20.04, XCB)	2m 20s
windows (Win32, Release, windows-latest)	3m 1s
linux (gcc, g++, Release, ubuntu-22.04, XCB)	1m 46s
windows (x64, Debug, windows-latest)	1m 54s
linux (gcc, g++, Release, ubuntu-22.04, WAYLAND)	2m 4s
windows (x64, Release, windows-latest)	5m 29s
linux (clang, clang++, Debug, ubuntu-20.04, XLIB)	1m 46s
linux (clang, clang++, Release, ubuntu-22.04, DISPLAY)	1m 30s
	40m 3s

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