Let autorebaseliner to its work.
Let autorebaseliner to its work.

Turn NeedsManualRebaseline to NeedsRebaseline now that
all the pieces of resizing plumbing have landed.

BUG=309760
TBR=jochen

Review URL: https://codereview.chromium.org/70593002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@161841 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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