views: Switch Checkbox over to LabelButton.
Rebase Checkbox and RadioButton on LabelButton.
Uses new Checkbox and Radio Button image assets.
(the classes previously used skia+native_theme)
See before/after comparison at http://crbug.com/155363#c79
Note: Height on Linux is slightly reduced, now closer to Windows.
BUG=155363
TEST=checkboxes and radio buttons look good in production, and in ash_shell "Examples Widgets" and "Views Examples" dialogs.
R=msw@chromium.org,sky@chromium.org,dbeam@chromium.org
COLLABORATOR=msw@chromium.org
Review URL: https://chromiumcodereview.appspot.com/15061006
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@201740 0039d316-1c4b-4281-b951-d872f2087c98
10 files changed
