BubbleFrameView::SetFootnoteView take std::unique_ptr<View>.

BubbleFrameView::SetFootnoteView() should take
an std::unique_ptr<View> to better convey ownership transfers.

Bug: 973845
Change-Id: I4bcbbc320a6b1926820222a30919ffb33c85c875
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1660383
Reviewed-by: Allen Bauer <[email protected]>
Reviewed-by: Michael Wasserman <[email protected]>
Commit-Queue: Yeol Park <[email protected]>
Cr-Commit-Position: refs/heads/master@{#671170}
5 files changed