[LFC] Pass in const LayoutContext& to geometry methods when possible

[LFC] Pass in const LayoutContext& to geometry methods when possible
https://bugs.webkit.org/show_bug.cgi?id=189331

Reviewed by Antti Koivisto.

Only layout and layout-like methods (intrinsic width computation -> shrink to fit -> out-of-flow/floating boxes) should take a
non-const LayoutContext&. Other geometry functions should not mutate the the context.

* layout/FormattingContext.cpp:
(WebCore::Layout::FormattingContext::computeOutOfFlowVerticalGeometry const):
(WebCore::Layout::FormattingContext::computeBorderAndPadding const):
(WebCore::Layout::FormattingContext::placeInFlowPositionedChildren const):
(WebCore::Layout::FormattingContext::layoutOutOfFlowDescendants const):
* layout/FormattingContext.h:
(WebCore::Layout::FormattingContext::Geometry::inlineReplacedWidthAndMargin):
* layout/FormattingContextGeometry.cpp:
(WebCore::Layout::contentHeightForFormattingContextRoot):
(WebCore::Layout::FormattingContext::Geometry::outOfFlowNonReplacedVerticalGeometry):
(WebCore::Layout::FormattingContext::Geometry::outOfFlowReplacedVerticalGeometry):
(WebCore::Layout::FormattingContext::Geometry::outOfFlowReplacedHorizontalGeometry):
(WebCore::Layout::FormattingContext::Geometry::complicatedCases):
(WebCore::Layout::FormattingContext::Geometry::floatingReplacedHeightAndMargin):
(WebCore::Layout::FormattingContext::Geometry::floatingReplacedWidthAndMargin):
(WebCore::Layout::FormattingContext::Geometry::outOfFlowVerticalGeometry):
(WebCore::Layout::FormattingContext::Geometry::floatingHeightAndMargin):
(WebCore::Layout::FormattingContext::Geometry::inlineReplacedHeightAndMargin):
(WebCore::Layout::FormattingContext::Geometry::inlineReplacedWidthAndMargin):
(WebCore::Layout::FormattingContext::Geometry::computedBorder):
(WebCore::Layout::FormattingContext::Geometry::computedPadding):
* layout/LayoutContext.cpp:
(WebCore::Layout::LayoutContext::layoutFormattingContextSubtree):
(WebCore::Layout::LayoutContext::establishedFormattingState const):
(WebCore::Layout::LayoutContext::createFormattingStateForFormattingRootIfNeeded):
(WebCore::Layout::LayoutContext::formattingContext const):
(WebCore::Layout::LayoutContext::establishedFormattingState): Deleted.
(WebCore::Layout::LayoutContext::formattingContext): Deleted.
* layout/LayoutContext.h:
* layout/blockformatting/BlockFormattingContext.cpp:
(WebCore::Layout::BlockFormattingContext::layoutFormattingContextRoot const):
(WebCore::Layout::BlockFormattingContext::computeStaticPosition const):
(WebCore::Layout::BlockFormattingContext::computeEstimatedMarginTop const):
(WebCore::Layout::BlockFormattingContext::computeEstimatedMarginTopForAncestors const):
(WebCore::Layout::BlockFormattingContext::computeFloatingPosition const):
(WebCore::Layout::BlockFormattingContext::computePositionToAvoidFloats const):
(WebCore::Layout::BlockFormattingContext::computeVerticalPositionForFloatClear const):
(WebCore::Layout::BlockFormattingContext::computeInFlowPositionedPosition const):
(WebCore::Layout::BlockFormattingContext::computeHeightAndMargin const):
(WebCore::Layout::BlockFormattingContext::instrinsicWidthConstraints const):
* layout/blockformatting/BlockFormattingContext.h:
* layout/blockformatting/BlockFormattingContextGeometry.cpp:
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowNonReplacedHeightAndMargin):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowNonReplacedWidthAndMargin):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowReplacedWidthAndMargin):
(WebCore::Layout::BlockFormattingContext::Geometry::staticPosition):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowPositionedPosition):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowHeightAndMargin):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowWidthAndMargin):
(WebCore::Layout::BlockFormattingContext::Geometry::instrinsicWidthConstraints):
* layout/inlineformatting/InlineFormattingContext.cpp:
(WebCore::Layout::InlineFormattingContext::computeStaticPosition const):
(WebCore::Layout::InlineFormattingContext::computeInFlowPositionedPosition const):
* layout/inlineformatting/InlineFormattingContext.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@235716 268f45cc-cd09-0410-ab3c-d52691b4dbfc