https://bugs.webkit.org/show_bug.cgi?id=90046

Reviewed by Dave Hyatt.

Do some method renaming in preparation for adding a new kind
of in-flow positioning: sticky positioning.

Rename RenderStyle::isOutOfFlowPositioned() to hasOutOfFlowPosition().
Add RenderStyle::hasInFlowPosition().

Use RenderObject::isInFlowPositioned() in places where it will apply
for both relative and sticky positioning.

Add RenderBoxModelObject::offsetForInFlowPosition(), which currently
applies just to relative positioning, but will also apply to sticky.

* css/CSSComputedStyleDeclaration.cpp:
(WebCore::getPositionOffsetValue):
* css/StyleResolver.cpp:
(WebCore::StyleResolver::collectMatchingRulesForList):
* editing/TextIterator.cpp:
(WebCore::ignoresContainerClip):
* rendering/LayoutState.cpp:
(WebCore::LayoutState::LayoutState):
* rendering/RenderBlock.cpp:
(WebCore::RenderBlock::styleWillChange):
(WebCore::RenderBlock::isSelectionRoot):
(WebCore::RenderBlock::blockSelectionGaps):
(WebCore::positionForPointRespectingEditingBoundaries):
* rendering/RenderBox.cpp:
(WebCore::RenderBox::styleWillChange):
(WebCore::RenderBox::updateBoxModelInfoFromStyle):
(WebCore::RenderBox::mapLocalToContainer):
(WebCore::RenderBox::offsetFromContainer):
(WebCore::RenderBox::computeRectForRepaint):
(WebCore::RenderBox::containingBlockLogicalWidthForPositioned):
(WebCore::RenderBox::containingBlockLogicalHeightForPositioned):
(WebCore::RenderBox::layoutOverflowRectForPropagation):
* rendering/RenderBox.h:
* rendering/RenderBoxModelObject.cpp:
(WebCore::accumulateInFlowPositionOffsets):
(WebCore::RenderBoxModelObject::relativePositionOffset):
(WebCore::RenderBoxModelObject::offsetForInFlowPosition):
(WebCore::RenderBoxModelObject::mapAbsoluteToLocalPoint):
* rendering/RenderBoxModelObject.h:
(RenderBoxModelObject):
(WebCore::RenderBoxModelObject::stickyPositionLogicalOffset):
(WebCore::RenderBoxModelObject::requiresLayer):
* rendering/RenderInline.cpp:
(WebCore::inFlowPositionedInlineAncestor): We need to actually return
the ancestor, since we will need to copy its position type once there
is more than one kind of in-flow position.
(WebCore::updateStyleOfAnonymousBlockContinuations):
(WebCore::RenderInline::styleDidChange):
(WebCore::RenderInline::addChildIgnoringContinuation):
(WebCore::RenderInline::clippedOverflowRectForRepaint):
(WebCore::RenderInline::computeRectForRepaint):
(WebCore::RenderInline::offsetFromContainer):
(WebCore::RenderInline::mapLocalToContainer):
(WebCore::RenderInline::offsetForInFlowPositionedInline):
* rendering/RenderInline.h:
(WebCore::RenderInline::requiresLayer):
* rendering/RenderLayer.cpp:
(WebCore::RenderLayer::updateLayerPosition):
(WebCore::isPositionedContainer):
(WebCore::RenderLayer::calculateClipRects):
(WebCore::RenderLayer::shouldBeNormalFlowOnly):
* rendering/RenderLayer.h:
(WebCore::RenderLayer::offsetForInFlowPosition):
* rendering/RenderObject.cpp:
(WebCore::RenderObject::markContainingBlocksForLayout):
(WebCore::RenderObject::setPreferredLogicalWidthsDirty):
(WebCore::RenderObject::invalidateContainerPreferredLogicalWidths):
(WebCore::RenderObject::containingBlock):
* rendering/RenderObject.h:
(WebCore::RenderObject::isRelPositioned):
* rendering/RenderObjectChildList.cpp:
(WebCore::RenderObjectChildList::updateBeforeAfterContent):
* rendering/style/RenderStyle.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@126520 268f45cc-cd09-0410-ab3c-d52691b4dbfc