Revert "Ignore clang -Wall warning."
Revert "Ignore clang -Wall warning."

This was not working as intended. The correct fix was implemented in
444922662a59a45ad8f86ec9480b180571337f4e

This reverts commit 74b92323c9a210178ab97cc9418d6bf639cb9d8c.

Change-Id: Ib2bc3861bcdb49555b59981ca95f1c1c1e924d7d
Reviewed-on: https://chromium-review.googlesource.com/320480
Tryjob-Request: Corentin Wallez <470c533e86f4f848c98c7e11fffc2d043494a401@chromium.org>
Reviewed-by: Geoff Lang <b6fc25fe0362055230985c05cbfa8adb741ccc0f@chromium.org>
Tested-by: Geoff Lang <b6fc25fe0362055230985c05cbfa8adb741ccc0f@chromium.org>

mlfarrell/angle,mikolalysenko/angle,ppy/angle,ppy/angle,ecoal95/angle,ecoal95/angle,ecoal95/angle,MSOpenTech/angle,mikolalysenko/angle,mlfarrell/angle,mlfarrell/angle,domokit/waterfall,ppy/angle,mlfarrell/angle,ppy/angle,MSOpenTech/angle,ecoal95/angle,MSOpenTech/angle,MSOpenTech/angle,mikolalysenko/angle,ecoal95/angle,mikolalysenko/angle,domokit/waterfall