The "Linux ChromiumOS GN (dbg)" hasn't been building for 1.5 months. They just fixed it and the compile is failing.

https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20GN%20%28dbg%29/builds/18803/steps/compile/logs/stdio

FAILED: /b/build/slave/Linux_ChromiumOS_GN__dbg_/build/src/build/goma/client/gomacc ../../third_party/llvm-build/Release+Asserts/bin/clang -MMD -MF obj/third_party/angle/src/third_party/libXNVCtrl/libXNVCtrl/NVCtrl.o.d -DV8_DEPRECATION_WARNINGS -DCLD_VERSION=2 -DENABLE_MDNS=1 -DENABLE_NOTIFICATIONS -DENABLE_PEPPER_CDMS -DENABLE_PLUGINS=1 -DENABLE_PDF=1 -DENABLE_PRINTING=1 -DENABLE_PRINT_PREVIEW=1 -DENABLE_SPELLCHECK=1 -DUSE_UDEV -DUI_COMPOSITOR_IMAGE_TRANSPORT -DUSE_ASH=1 -DUSE_AURA=1 -DUSE_PANGO=1 -DUSE_CAIRO=1 -DUSE_CLIPBOARD_AURAX11=1 -DUSE_DEFAULT_RENDER_THEME=1 -DUSE_GLIB=1 -DUSE_OPENSSL=1 -DUSE_NSS_CERTS=1 -DUSE_NSS_VERIFIER=1 -DUSE_X11=1 -DENABLE_WEBRTC=1 -DENABLE_EXTENSIONS=1 -DENABLE_TASK_MANAGER=1 -DENABLE_THEMES=1 -DENABLE_CAPTIVE_PORTAL_DETECTION=1 -DENABLE_SESSION_SERVICE=1 -DENABLE_APP_LIST=1 -DENABLE_SUPERVISED_USERS=1 -DENABLE_SERVICE_DISCOVERY=1 -DENABLE_AUTOFILL_DIALOG=1 -DIMAGE_LOADER_EXTENSION=1 -DENABLE_TOPCHROME_MD=1 -DENABLE_WAYLAND_SERVER=1 -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD -DENABLE_MEDIA_ROUTER=1 -DFIELDTRIAL_TESTING_ENABLED -DCR_CLANG_REVISION=264915-1 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DCOMPONENT_BUILD -DOS_CHROMEOS -D_DEBUG -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DWTF_USE_DYNAMIC_ANNOTATIONS=1 -D_GLIBCXX_DEBUG=1 -I../.. -Igen -fno-strict-aliasing -funwind-tables -fPIC -pipe -B../../third_party/binutils/Linux_x64/Release/bin -fcolor-diagnostics -fdebug-prefix-map=/b/build/slave/Linux_ChromiumOS_GN__dbg_/build/src=. -pthread -m64 -march=x86-64 -Wall -Werror -Wextra -Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-covered-switch-default -Wno-deprecated-register -Wno-unneeded-internal-declaration -Wno-inconsistent-missing-override -Wno-shift-negative-value -O0 -g2 -gsplit-dwarf -fvisibility=hidden -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.so -Xclang -add-plugin -Xclang find-bad-constructs -Xclang -plugin-arg-find-bad-constructs -Xclang check-templates -Xclang -plugin-arg-find-bad-constructs -Xclang follow-macro-expansion -Wheader-hygiene -Wstring-conversion  -c ../../third_party/angle/src/third_party/libXNVCtrl/NVCtrl.c -o obj/third_party/angle/src/third_party/libXNVCtrl/libXNVCtrl/NVCtrl.o
../../third_party/angle/src/third_party/libXNVCtrl/NVCtrl.c:77:36: error: passing 'const char *' to parameter of type 'char *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
                                   nvctrl_extension_name,
                                   ^~~~~~~~~~~~~~~~~~~~~
/usr/include/X11/extensions/extutil.h:159:45: note: expanded from macro 'XEXT_GENERATE_FIND_DISPLAY'
      dpyinfo = XextAddDisplay (extinfo,dpy,extname,hooks,nev,data); \
                                            ^~~~~~~
/usr/include/X11/extensions/extutil.h:126:26: note: passing argument to parameter here
    char*               /* ext_name */,
                                      ^
1 error generated.
ninja: build stopped: subcommand failed.

Can an ANGLE expert help?