This patch was generated automatically by the "modeline.py" script, available
here: https://github.com/amccreight/moz-source-tools/blob/master/modeline.py
For every file that is modified in this patch, the changes are as follows:
(1) The patch changes the file to use the exact C++ mode lines from the
Mozilla coding style guide, available here:
https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Mode_Line
(2) The patch deletes any blank lines between the mode line & the MPL
boilerplate comment.
(3) If the file previously had the mode lines and MPL boilerplate in a
single contiguous C++ comment, then the patch splits them into
separate C++ comments, to match the boilerplate in the coding style.
MozReview-Commit-ID: EuRsDue63tK
(Path is actually r=froydnj.)
Bug 1400459 devirtualized nsIAtom so that it is no longer a subclass of
nsISupports. This means that nsAtom is now a better name for it than nsIAtom.
MozReview-Commit-ID: 91U22X2NydP
nsIFrame::mClass is of type enum class nsQueryFrame::ClassID which is
a strict subset of the nsQueryFrame::FrameIID values. For a concrete
frame class, its FrameIID is the same numeric value as its ClassID.
MozReview-Commit-ID: 1N0AkCGo1ol
This is a bug from https://hg.mozilla.org/mozilla-central/rev/2d171d75b746 (bug 1157546). It took a shortcut in trying to get around one of the downsides of tracking visibility on frames instead of content nodes.
We cannot get our primary frame during FrameCreate calls because FrameCreate is called during the frame's Init() function, which happens before the primary frame pointer is set.
So when TrackImage is called from FrameCreate |frame| will be null but mFrameCreateCalled will be true. So we won't hit the early return that tries to detect nonvisible images.
The comment being removed is just wrong. We can obtain a frame for <feImage> just as well as any other image type.
The thing that is different about <feImage> is that it calls IncApproximateVisibleCount() followed by FrameCreated() in the frame's Init() function. This means that the frame is marked visible at the time of the FrameCreated, and there will be no further calls to TrackImage (because there are no further changes). So the FrameCreated call is the last chance to mark this image visible. The regressing changeset tries to get around this by just considering the image visible whenever we know a frame exists (because of mFrameCreateCalled) but can't access it. This ends up affecting all types of images, not just <feImage>.
The above paragraph is also true for SVG <image> that are non-display.
