Changes the focus chain in notification settings entries.

NotificationSettingsView calls set_focusable(false) in
OnBlur() to detach from the focus chain among settings
entries. However OnBlur() may be called in other case like
the dialog is minimized, and in that case the focused view
becomes NULL.

This CL removes set_focusable(false), but fixes the focus
chain among the settings entries so NotificationSettingsView
won't be focused by tab-keys.

BUG=202340
R=dewittj@chromium.org

Review URL: https://chromiumcodereview.appspot.com/14293018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@196315 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed