https://bugs.webkit.org/show_bug.cgi?id=106931

Reviewed by Julien Chaffraix.

Code shouldn't need to explicitly call computePreferredLogicalWidths.
It should only get called as a by-product of calling minPreferredLogicalWidth
or maxPreferredLogicalWidth.

Instead, make it clear that the calling code is just trying to clear
preferred width dirty bits.

* rendering/AutoTableLayout.cpp:
(WebCore::AutoTableLayout::recalcColumn):
The computePreferredLogicalWidths call on the table cell is redundant
with the minPreferredLogicalWidth call on the next line.

* rendering/FixedTableLayout.cpp:
(WebCore::FixedTableLayout::calcWidthArray):
We only need to clear the dirty bit here. Table cells don't use
their preferred widths in fixed table layout calculations.

* rendering/RenderTableCell.h:
* rendering/RenderTableCol.cpp:
(WebCore::RenderTableCol::clearPreferredLogicalWidthsDirtyBits):
* rendering/RenderTableCol.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140047 268f45cc-cd09-0410-ab3c-d52691b4dbfc