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We will now get the frame data from the RenderFrameHost when needed. We
still need the map singleton to store the deleted frame info for beacon
requests.

Bug: 980774
Change-Id: I3bee8834b00897119f7493981a5080df26794bf1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1721933Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Commit-Queue: Clark DuVall <cduvall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682133}