Have RenderBlockFlow sub-classes' methods call their super-class method properly.

Have RenderBlockFlow sub-classes' methods call their super-class method properly.

RenderBlockFlowSubclass::foo() should typically call
RenderBlockFlow::foo(), not RenderBlock::foo(), unless there are
special reasons for bypassing RenderBlockFlow in particular cases.

I failed to come up with a test case that illustrates this problem,
but RenderListItem::styleDidChange() not calling
RenderBlockFlow::styleDidChange() sure looks bad. If it has floats and
becomes a BFC, parents, siblings, cousins etc. are not properly told
to remove the floats that are now fully contained by the list item. I
suppose there would be dangling pointers lying around because of this.

BUG=302024
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=167161

[leviw_travelin_and_unemployed, 2014-02-14 01:29:14]

Great! Thank you! LGTM.

[mstensho (USE GERRIT), 2014-02-14 06:19:42]

The CQ bit was checked by mstensho@opera.com

[commit-bot: I haz the power, 2014-02-14 06:19:47]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mstensho@opera.com/163513002/1

[commit-bot: I haz the power, 2014-02-14 08:03:56]

Change committed as 167161