This new method on view reflects whether the view has been laid out
at least once since it was attached. hasLayout() seems too vague for that
meaning; every View that has a parent has a layout (since we use container,
parent, and layout interchangeably). The new version of the method
is closer to the actual meaning.
Change-Id: I519745739b6a6317faeb077aa61f994025cf81f3