Convert a couple more values in goog.dom.BrowserFeature to constants. RELNOTES:n/a
Convert a couple more values in goog.dom.BrowserFeature to constants.
RELNOTES:n/a

PiperOrigin-RevId: 390237612
Change-Id: I5a483a4596977be2ba6a41402fa022d5bd780bbc

google/closure-library,google/closure-library,google/closure-library,google/closure-library,google/closure-library