Revert of Tracking filter mutation via SVGElementProxy (patchset #15 id:280001 of https://codereview.chromium.org/2401343002/ )
Reason for revert:
There are several reports of issues from this patch. Lets go ahead and roll out for now.
BUG=663362,663444,663473,663362
Original issue's description:
> Tracking reference filter mutation via SVGElementProxy
>
> This introduces SVGElementProxy - a new piece with the functionality of
> DocumentResourceReference and the ReferenceFilterBuilder merged. It
> provides the means to track clients of a certain element (only
> SVGFilterElements for now, but will likely be extended to other types if
> it ends up sticking.) An SVGElementProxy is created, and primarily owned,
> by CSSURIValue. The proxy also handles loading of a resource document, if
> requested.
>
> Clients are SVGResourceClients, like before, with methods/callbacks
> renamed. Some of the old functionality of SVGResourceClient has either
> been moved to clients, to the proxy or been replaced with different
> solutions.
>
> Mutations to the element/subtree is signaled separately from any
> potential changes to the actual reference (anything that might invalidate
> the element reference.)
>
> BUG=439970
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
>
> Committed: https://crrev.com/d36f8a8c9c4b7d757c0d8832e624be80c4465991
> Cr-Commit-Position: refs/heads/master@{#430550}
TBR=esprehn@chromium.org,fs@opera.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=439970,663362,663444,663473,663362
Review-Url: https://codereview.chromium.org/2482353002
Cr-Commit-Position: refs/heads/master@{#430800}
45 files changed
