GitLab

Use the existing views API (views::Widget::GetWidgetForNativeView()) to
get any existing views::Widget for an athena::Activity, instead of asking
its ActivityViewModel.

BUG=none
R=oshima@chromium.org

Review URL: https://codereview.chromium.org/702473005

Cr-Commit-Position: refs/heads/master@{#302523}