In https://chromium-review.googlesource.com/c/528078/ we tried to add 'all' the Linux ARM builder but it fails in the 'confirm no-op' phase:

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Ftryserver.chromium.linux%2Flinux_arm%2F896%2F%2B%2Frecipes%2Fsteps%2Fcompile__with_patch__confirm_no-op%2F0%2Fstdout

ninja explain: restat of output dump_syms older than most recent input obj/breakpad/dump_syms.inputdeps.stamp (0 vs 1496944513)
ninja explain: dump_syms is dirty
ninja explain: obj/breakpad/dump_syms.stamp is dirty