GitLab

Removed BrowserView::ViewHierarchChanged, moved most code to constructor and widget-specfic code to AddedToWidget.

Bug: 245409
Change-Id: I1e606548df4361199862c561ad86f4d40cbaa7df
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1979098
Commit-Queue: Allen Bauer <kylixrd@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#728998}