GitLab

This fixes the dialog-like confirm "bubble" class.
(make it a window-modal dialog delegate subclass)
Call new SpellingBubbleModel::SetPref(false) on 'No thanks'.
(clicking ok then cancel in two windows yields feature off)

See pics of the change at http://crbug.com/166075#c31

TODO(followup): Remove ConfirmBubble*? (only used by spelling).
TODO(followup): Fix insets after tweaking the new dialog style.
TODO(followup): Fix dialog 'extra view' placement.

BUG=166075
TEST=Spelling bubble (web textfield context menu -> "Spell-checker options" -> "Ask Google for suggestions") looks/works reasonable on Win/CrOS/Aura.
R=rlp@chromium.org,sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12222003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@181975 0039d316-1c4b-4281-b951-d872f2087c98