[CSS Exclusions] Some layout tests fail to account for inline pixel snapping
https://bugs.webkit.org/show_bug.cgi?id=116115

Reviewed by Dirk Schulze.

Adjust the expected locations of spans to account for the fact that inline layout snaps boxes' logical top
and bottom to pixels, and the fact that line segment layout rounds the logical left and floors the logical
right of segments.

* fast/exclusions/shape-inside/shape-inside-polygon-layout.html: Use the quiet variable!
* fast/exclusions/shape-outside-floats/shape-outside-floats-diamond-margin-polygon-expected.txt:
* fast/exclusions/shape-outside-floats/shape-outside-floats-diamond-margin-polygon.html:
* fast/exclusions/shape-outside-floats/shape-outside-floats-ellipse-margin-left.html:
* fast/exclusions/shape-outside-floats/shape-outside-floats-ellipse-margin-right.html:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@150097 268f45cc-cd09-0410-ab3c-d52691b4dbfc