Prepare for color input datalist support on Android

We are passing datalist suggestions when opening the color chooser.
Also adding color to input types that support datalist on Android.

BUG=242455

Review URL: https://codereview.chromium.org/23236002

git-svn-id: svn://svn.chromium.org/blink/trunk@161893 bbb929c8-8fbe-4397-9dbb-9b2b20218538