Commits on Dec 1, 2016

1. layout_thread: Note in the debug message whether nodes require dirtying.

   

   pcwalton committed Dec 1, 2016
   f97d471

2. layout_thread: Log reflows that happen due to animation ticks if …

   `-Z relayout-event` is on.

   

   pcwalton committed Dec 1, 2016
   0e338d5

3. compositing: Only make the compositor responsible for initiating reflow …

   for CSS transitions and animations, not `requestAnimationFrame()`
   callbacks.
   
   In the case of the latter, the script thread will kick off the reflow if
   it's necessary, so there's no need for the compositor to do it.
   
   Some pages, like nytimes.com, like to call `requestAnimationFrame()`
   without actually mutating the DOM in the callback. We should avoid
   reflowing in this case.

   

   pcwalton committed Dec 1, 2016
   f378f28

4. layout: Don't restart a transition if the end value for the new …

   transition is the same as the end value for a running transition per
   CSS-TRANSITIONS § 3.
   
   Besides being contrary to spec, the old behavior could cause a cascade
   of CSS transitions incorrectly triggering themselves when calls to
   `getComputedStyle()` were intermingled with them.
   
   Improves performance of nytimes.com.

   

   pcwalton committed Dec 1, 2016
   89dff2d

5. layout: Minor style cleanup.

   

   pcwalton committed Dec 1, 2016

   Loading status checks…
   ca3d802