Switch rendering tree selection code to to new layout types

Switch rendering tree selection code to to new layout types
https://bugs.webkit.org/show_bug.cgi?id=63762

Reviewed by Eric Seidel.

Switch selection getters and selection gap calculation methods over to
new layout abstraction.

No new tests, no functionality changes.

* rendering/InlineTextBox.cpp:
(WebCore::InlineTextBox::selectionTop):
(WebCore::InlineTextBox::selectionBottom):
(WebCore::InlineTextBox::selectionHeight):
(WebCore::InlineTextBox::isSelected):
* rendering/InlineTextBox.h:
* rendering/RenderBR.h:
(WebCore::RenderBR::selectionRectForRepaint):
* rendering/RenderBlock.cpp:
(WebCore::RenderBlock::selectionGapRectsForRepaint):
(WebCore::RenderBlock::selectionGaps):
(WebCore::RenderBlock::inlineSelectionGaps):
(WebCore::RenderBlock::blockSelectionGaps):
(WebCore::RenderBlock::blockSelectionGap):
(WebCore::RenderBlock::logicalLeftSelectionGap):
(WebCore::RenderBlock::logicalRightSelectionGap):
(WebCore::RenderBlock::logicalLeftSelectionOffset):
(WebCore::RenderBlock::logicalRightSelectionOffset):
(WebCore::RenderBlock::positionForPointWithInlineChildren):
(WebCore::RenderBlock::desiredColumnWidth):
* rendering/RenderBlock.h:
(WebCore::RenderBlock::selectionRectForRepaint):
* rendering/RenderListMarker.cpp:
(WebCore::RenderListMarker::selectionRectForRepaint):
* rendering/RenderListMarker.h:
* rendering/RenderObject.h:
(WebCore::RenderObject::selectionRect):
(WebCore::RenderObject::selectionRectForRepaint):
* rendering/RenderReplaced.cpp:
(WebCore::RenderReplaced::selectionRectForRepaint):
* rendering/RenderReplaced.h:
* rendering/RenderSelectionInfo.h:
(WebCore::RenderSelectionInfo::RenderSelectionInfo):
* rendering/RenderText.cpp:
(WebCore::RenderText::selectionRectForRepaint):
* rendering/RenderText.h:
* rendering/RootInlineBox.cpp:
(WebCore::RootInlineBox::selectionTop):
(WebCore::RootInlineBox::selectionBottom):
* rendering/RootInlineBox.h:
(WebCore::RootInlineBox::selectionHeight):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@90596 268f45cc-cd09-0410-ab3c-d52691b4dbfc