The 300 second threshold was originally from the Gecko/Firefox build system. It doesn't fit Servo builds, which are shorter, and often hover right around the 300 second mark (making the notification unpredictable).
It will create a StackingContext for inline elements that may need it, I'm looking for feedback on this.
Not for commit, as there are some tests failing.
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It required to move create_stacking_context() outside of BlockFlow,
as a method of FragmentDisplayListBuilding. This allowed the reuse
for inline fragments that need a stacking context.
As we now create stacking contexts (SC) for inline elements, this stresses
the code in Fragment that calculates the need for a SC.
For while, we create a SC only if there are filters associated with the
Inline element. Companion issue is #5812.
The 300 second threshold was originally from the Gecko/Firefox build system.
It doesn't fit Servo builds, which are shorter, and often hover right around
the 300 second mark (making the notification unpredictable).
* Simpler image cache API for clients to use.
* Significantly fewer threads.
* One thread for image cache task (multiplexes commands, decoder threads and async resource requests).
* 4 threads for decoder worker tasks.
* Removed ReflowEvent hacks in script and layout tasks.
* Image elements pass a Trusted<T> to image cache, which is used to dirty nodes via script task. Previous use of Untrusted addresses was unsafe.
* Image requests such as background-image on layout / paint threads trigger repaint only rather than full reflow.
* Add reflow batching for when multiple images load quickly.
* Reduces the number of paints loading wikipedia from ~95 to ~35.
* Reasonably simple to add proper prefetch support in a follow up PR.
* Async loaded images always construct Image fragments now, instead of generic.
* Image fragments support the image not being present.
* Simpler implementation of synchronous image loading for reftests.
* Removed image holder.
* image.onload support.
* image NaturalWidth and NaturalHeight support.
* Updated WPT expectations.
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* Simpler image cache API for clients to use.
* Significantly fewer threads.
* One thread for image cache task (multiplexes commands, decoder threads and async resource requests).
* 4 threads for decoder worker tasks.
* Removed ReflowEvent hacks in script and layout tasks.
* Image elements pass a Trusted<T> to image cache, which is used to dirty nodes via script task. Previous use of Untrusted addresses was unsafe.
* Image requests such as background-image on layout / paint threads trigger repaint only rather than full reflow.
* Add reflow batching for when multiple images load quickly.
* Reduces the number of paints loading wikipedia from ~95 to ~35.
* Reasonably simple to add proper prefetch support in a follow up PR.
* Async loaded images always construct Image fragments now, instead of generic.
* Image fragments support the image not being present.
* Simpler implementation of synchronous image loading for reftests.
* Removed image holder.
* image.onload support.
* image NaturalWidth and NaturalHeight support.
* Updated WPT expectations.
