I want in display finger print lock

@jinho.bang
according spec change[1], scaleNonUniform was only re-added for legacy reasons.

[1]https://github.com/w3c/fxtf-drafts/commit/b69e666a95f833087217c3783a4d7095d1abfde3#diff-ed7daeb157cd9b31e53896ad3c771a26

i wrote "Intent to implement and ship" in blink-dev group.
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/BJJKDby5p7w

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/57f350e070536c7870cad53b3edf74f58cc51d50

commit 57f350e070536c7870cad53b3edf74f58cc51d50
Author: Hwanseung Lee <hs1217.lee@samsung.com>
Date: Fri Nov 30 00:33:50 2018

[GeometryInterface] add scaleNonUniform method in DOMMatrixReadOnly

DOMMatrix should be alias to SVGMatrix. (It was not implement in blink yet)
SVGMatrix have scaleNonUniform() function. but DOMMatrix was not.
there are some website which is used SVGMatrix.scaleNonUniform().
it would be possible brake some website when DOMMatrix be alias
to SVGMatrix.

Intent to implement and ship:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/BJJKDby5p7w

Bug:  905921 
Change-Id: Ic09b8d6e46d0aa822b766bd6cfbc5ce7c2164849
Reviewed-on: https://chromium-review.googlesource.com/c/1341279
Commit-Queue: Hwanseung Lee <hs1217.lee@samsung.com>
Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Reviewed-by: Jinho Bang <jinho.bang@samsung.com>
Cr-Commit-Position: refs/heads/master@{#612473}
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/renderer/core/geometry/dom_matrix_read_only.cc
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/renderer/core/geometry/dom_matrix_read_only.h
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/renderer/core/geometry/dom_matrix_read_only.idl
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/external/wpt/css/geometry/DOMMatrix-002.html
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/external/wpt/css/geometry/DOMMatrix-003.html
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/external/wpt/css/geometry/historical.html
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/external/wpt/css/geometry/interfaces-expected.txt
[delete] https://crrev.com/bc0c4e6775a929cb1358d2690df91831682f6fe0/third_party/blink/web_tests/external/wpt/css/geometry/interfaces.worker-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/fast/dom/geometry-interfaces-dom-matrix-scale-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/fast/dom/geometry-interfaces-dom-matrix-scale.html
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/virtual/stable/http/tests/serviceworker/webexposed/global-interface-listing-service-worker-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/virtual/stable/webexposed/global-interface-listing-dedicated-worker-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/virtual/stable/webexposed/global-interface-listing-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/virtual/stable/webexposed/global-interface-listing-shared-worker-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt
[modify] https://crrev.com/57f350e070536c7870cad53b3edf74f58cc51d50/third_party/blink/web_tests/webexposed/global-interface-listing-shared-worker-expected.txt