Fix color chooser dialog not opening on Android

Regression caused by r161893. It caused the color chooser dialog to not open at all on Android.

BUG=None

Review URL: https://codereview.chromium.org/101793004

git-svn-id: svn://svn.chromium.org/blink/trunk@163314 bbb929c8-8fbe-4397-9dbb-9b2b20218538