Specs: introduce layoutDescendants() to avoid work when a layout
manager is unaffected by its childrens' intrinsic dimensions
Examples: update for layoutDescendants() change
Specs: add "lifetime" to resolver settings so that a transition can
avoid having to dirty every consumer of the property every frame when
it only needs to update the objects that are changing that frame
Specs: expose the parents on AbstractStyleDeclarationList subclasses
Specs: fix documentation around autoreap
Specs: fix definition of setProperty()
Specs: clean up the dimension-related logic of layout managers
Review URL: https://codereview.chromium.org/850593003
actually telling your child to paint, you just say where it would
paint. The platform then takes care of making sure all the dirty nodes
have their paint() methods called.
Review URL: https://codereview.chromium.org/744843003
