commit a8014bf1bc9b0c1c4b709702f404a84c5cc948cd
author Fredrik Söderquist <fs@opera.com> Mon Dec 18 16:48:54 2017
committer Commit Bot <commit-bot@chromium.org> Mon Dec 18 16:48:54 2017
tree 4339441d7fb1d9e4ecfecfe3e5db6feffc643ed0
parent fd1fa7e795750ca1bf07fb982ca42caca776feb5

[PE] Invalidate <use> instances even when mutating from the parser

When a layout is triggered when the parser is interrupted, an instance
tree can be built for a <use> that references a subtree that contains
the insertion point of the parser. This <use> instance (or instances)
would then not be invalidated when the parsing resumed.

Invalidate instances of an element when its children changes even when
the mutation originates from the parser. (This condition was added in
3c2310f2e9e0947e390c25911b61cfe69e162a78 without further explanation
"Only invalidate SVGElementInstances when !changedByParser is set.". Due
to the lazyness of the shadow tree/instance rebuilding this will
hopefully not regress performance.)

Bug: 794594
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: I58f3a74ef9812503c0111d3564dad8ee3527d27b
Reviewed-on: https://chromium-review.googlesource.com/832386
Reviewed-by: Stephen Chenney <schenney@chromium.org>
Commit-Queue: Fredrik Söderquist <fs@opera.com>
Cr-Commit-Position: refs/heads/master@{#524726}