Reset singleton ZoomBubbleView::zoom_bubble_ in ::Close()
The current implementation of ZoomBubbleView is capable of attempting to
re-use a zoom bubble with a stale WebContents*.
This CL resets ZoomBubbleView::zoom_bubble_ in the
ZoomBubbleView::Close() method to avoid inadvertent reuse. It also adds
a DCHECK to make sure WebContents* are never mis-matched in calls to
ZoomBubbleView::ShowBubble().
BUG=428561
Review URL: https://codereview.chromium.org/712993004
Cr-Commit-Position: refs/heads/master@{#303945}
(cherry picked from commit d1b6f4d89d002808689a156b739f8d7fd80104fb)
TBR=wjmaclean
Review URL: https://codereview.chromium.org/752153005
Cr-Commit-Position: refs/branch-heads/2214@{#127}
Cr-Branched-From: 03655fd3f6d72165dc3c9bd2c89807305316fe6c-refs/heads/master@{#303346}
2 files changed
