Source/WebKit/WebProcess/cocoa/WebProcessCocoa.mm:1173:27: error: unused function 'increaseContrastPreferenceKey' [-Werror,-Wunused-function] static const WTF::String& increaseContrastPreferenceKey()
<rdar://problem/80503620>
Created attachment 433392 [details] patch
Oh I already landed this in https://commits.webkit.org/r279865
Sorry, I should have realized that you posted this...