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Chrome will crash if we select some bookmarks and then add them
to their parent folder. This CL is trying to fix that.

Bug: 1012651
Change-Id: I164de82a84bf922c5acdcea560a033291856708d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1850418Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Lijin Shen <lazzzis@google.com>
Cr-Commit-Position: refs/heads/master@{#705726}