918064 - don't make a RestyleSelf call for each continuation (and similar inReParentStyleContext)

Status: NEW

(Core :: CSS Parsing and Computation, defect)

Description

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

The next step following the sequence of refactorings: bug 896138, bug 898209, bug 898329, bug 898333, and bug 828312 is that we should change ElementRestyler::RestyleSelf so that it sets the style context on all continuations and block-in-inline siblings as appropriate rather than requiring a separate RestyleSelf call in each one.  We likely want to make similar changes to ReParentStyleContext.

This should remove the remainder of the things marked "TEMPORARY" from bug 898333 patch 2.

Comment 1

[Mats Palmgren (inactive)]

I suspect that this will bit-rot my patches for display/box:contents (in bug 907396,
bug 917313) pretty bad.  If it's just cleanup, can it wait until after that lands?

Comment 2

[Cameron McCormack (:heycam)]

Is it possible for same-style-continuation frames to have additional style contexts?  And if so, is it possible for them to have a different number of additional style contexts?  That would make this refactoring a less straightforward than it otherwise would be.