iOS Build was broken recently. e.g.: https://build.webkit.org/builders/Apple%20iOS%2013%20Release%20%28Build%29/builds/3004 In file included from /Volumes/Data/slave/ios-13-release/build/WebKitBuild/Release-iphoneos/DerivedSources/WebKit2/unified-sources/UnifiedSource55-mm.mm:6: /Volumes/Data/slave/ios-13-release/build/Source/WebKit/WebProcess/WebPage/ios/WebPageIOS.mm:4064:73: error: use of undeclared identifier 'BoundingRectBehavior' rects.append({ contextIterator.range()->absoluteBoundingBox(BoundingRectBehavior::IgnoreEmptyTextSelections), { currentLocation, 1 } }); ^ 1 error generated.
Seems like it was broken by https://trac.webkit.org/changeset/254144/webkit
rolled out in https://trac.webkit.org/changeset/254151
<rdar://problem/58385016>