GitLab

This change:
1) Allows SessionCrashedBubbleView to anchor to a rect instead of a view;
2) Has it use a rect when a Cocoa browser window is in use;
3) Has SessionCrashedBubbleViewTest use a rect when a Cocoa browser window is
   in use too

Bug: 653966, 817408
Change-Id: I89d6327cc4df09e870891ace0b9cca151235051a
Reviewed-on: https://chromium-review.googlesource.com/961501
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543690}