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This reverts 8f7ddcd6
It breaks Windows, where |set_accept_events| does not work.

Original description:
> Uses BubbleDialogDelegateView::set_accept_events and removes
> BubbleFrameView::set_hit_test_transparent
> See related https://crbug.com/978985

Bug: 1004721
Change-Id: Ia272423be8706c4793c2c3f089ca30e16c653094
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1824031Reviewed-by: Dana Fried <dfried@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701139}