CSS entry for Dialog element should be in RenderTheme::extraDefaultStyleSheet

core/rendering/css/html.css still contains the css for the dialog element. If the runtime flag is off, feature detection in web sites will fail.  This rule should be added in RenderTheme::extraDefaultStyleSheet depending on the runtime flag.

R=
BUG=243225

Review URL: https://chromiumcodereview.appspot.com/15840002

git-svn-id: svn://svn.chromium.org/blink/trunk@151171 bbb929c8-8fbe-4397-9dbb-9b2b20218538
2 files changed