Fix a compilation with non-clang/non-gcc compilers

This is going back to PS #4 in
https://codereview.chromium.org/1148463002/

BUG=466959, 508049, 508440
TEST=See bugs
TBR=thakis@chromium.org

Review URL: https://codereview.chromium.org/1237873002 .
2 files changed