The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/59d3539fc7ce60355ccf52c00733d33dde5e118a

commit 59d3539fc7ce60355ccf52c00733d33dde5e118a
Author: robhogan <robhogan@gmail.com>
Date: Mon Mar 14 22:11:40 2016

Merge contiguous anonymous blocks after removing a float or out-of-pos-element between them

BUG= 592734 

Review URL: https://codereview.chromium.org/1759853003

Cr-Commit-Position: refs/heads/master@{#381087}

[add] https://crrev.com/59d3539fc7ce60355ccf52c00733d33dde5e118a/third_party/WebKit/LayoutTests/fast/block/float/add-float-back-to-anonymous-block-previous-expected.txt
[add] https://crrev.com/59d3539fc7ce60355ccf52c00733d33dde5e118a/third_party/WebKit/LayoutTests/fast/block/float/add-float-back-to-anonymous-block-previous.html
[modify] https://crrev.com/59d3539fc7ce60355ccf52c00733d33dde5e118a/third_party/WebKit/Source/core/layout/LayoutBlock.cpp