[LFC][Floating] Now that the document renderer belongs to "complicated cases", adjust...

[LFC][Floating] Now that the document renderer belongs to "complicated cases", adjust viewport stretching.
https://bugs.webkit.org/show_bug.cgi?id=188306

Reviewed by Antti Koivisto.

Source/WebCore:

And add passing cases for floats.

* layout/blockformatting/BlockFormattingContextGeometry.cpp:
(WebCore::Layout::initialContainingBlock):
(WebCore::Layout::isStretchedToInitialContainingBlock):
(WebCore::Layout::stretchHeightToInitialContainingBlock):
(WebCore::Layout::stretchWidthToInitialContainingBlock):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowNonReplacedHeightAndMargin):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowNonReplacedWidthAndMargin):
(WebCore::Layout::BlockFormattingContext::Geometry::inFlowHeightAndMargin):
(WebCore::Layout::isStretchedToViewport): Deleted.

Tools:

* LayoutReloaded/misc/LFC-passing-tests.txt:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@234546 268f45cc-cd09-0410-ab3c-d52691b4dbfc