https://bugs.webkit.org/show_bug.cgi?id=69202

https://bugs.webkit.org/show_bug.cgi?id=69202

[CSS3 Regions] Make positioned objects use the first region as the ICB when it
is their containing block. Make sure static distance computations take into
account the current region as well.

Reviewed by Sam Weinig.

Source/WebCore:

Added new tests in fast/regions.

* rendering/RenderBlock.cpp:
(WebCore::RenderBlock::adjustPositionedBlock):
* rendering/RenderBlock.h:
(WebCore::RenderBlock::startOffsetForContent):
* rendering/RenderBox.cpp:
(WebCore::RenderBox::containingBlockLogicalWidthForPositioned):
(WebCore::RenderBox::containingBlockLogicalHeightForPositioned):
(WebCore::computeInlineStaticDistance):
(WebCore::computeLogicalLeftPositionedOffset):
(WebCore::computeLogicalTopPositionedOffset):
* rendering/RenderFlowThread.cpp:
(WebCore::RenderFlowThread::contentLogicalWidthOfFirstRegion):
(WebCore::RenderFlowThread::contentLogicalHeightOfFirstRegion):
(WebCore::RenderFlowThread::contentLogicalLeftOfFirstRegion):
* rendering/RenderFlowThread.h:

LayoutTests:

* fast/regions/positioned-objects-block-static-in-regions.html: Added.
* fast/regions/positioned-objects-block-static-in-rtl-regions.html: Added.
* fast/regions/positioned-objects-in-regions.html: Added.
* fast/regions/positioned-objects-in-rtl-regions.html: Added.
* fast/regions/positioned-objects-inline-static-in-regions.html: Added.
* fast/regions/positioned-objects-inline-static-in-rtl-regions.html: Added.
* fast/regions/positioned-objects-perpendicular-flows-in-regions.html: Added.
* platform/mac/fast/regions/positioned-objects-block-static-in-regions-expected.png: Added.
* platform/mac/fast/regions/positioned-objects-block-static-in-regions-expected.txt: Added.
* platform/mac/fast/regions/positioned-objects-block-static-in-rtl-regions-expected.png: Added.
* platform/mac/fast/regions/positioned-objects-block-static-in-rtl-regions-expected.txt: Added.
* platform/mac/fast/regions/positioned-objects-in-regions-expected.png: Added.
* platform/mac/fast/regions/positioned-objects-in-regions-expected.txt: Added.
* platform/mac/fast/regions/positioned-objects-in-rtl-regions-expected.png: Added.
* platform/mac/fast/regions/positioned-objects-in-rtl-regions-expected.txt: Added.
* platform/mac/fast/regions/positioned-objects-inline-static-in-regions-expected.png: Added.
* platform/mac/fast/regions/positioned-objects-inline-static-in-regions-expected.txt: Added.
* platform/mac/fast/regions/positioned-objects-inline-static-in-rtl-regions-expected.png: Added.
* platform/mac/fast/regions/positioned-objects-inline-static-in-rtl-regions-expected.txt: Added.
* platform/mac/fast/regions/positioned-objects-perpendicular-flows-in-regions-expected.png: Added.
* platform/mac/fast/regions/positioned-objects-perpendicular-flows-in-regions-expected.txt: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@96452 268f45cc-cd09-0410-ab3c-d52691b4dbfc