Import WPT css/geometry-1

third_party/WebKit/LayoutTests/external/wpt/css/geometry-1/DOMMatrix-css-string.worker.js

+// https://drafts.fxtf.org/geometry/#DOMMatrix
+
+importScripts("/resources/testharness.js");
+
+['DOMMatrix', 'DOMMatrixReadOnly'].forEach(constr => {
+  test(() => {
+    assert_true(constr in self, `${constr} should exist`);
+    assert_throws(new TypeError(), () => new self[constr]('matrix(1,0,0,1,0,0)') );
+  }, `${constr} constructor with string argument in worker`);
+});
+
+test(() => {
+  assert_false('setMatrixValue' in DOMMatrix.prototype, 'on prototype');
+  const matrix = new DOMMatrix();
+  assert_false('setMatrixValue' in matrix, 'on instance');
+}, 'DOMMatrix setMatrixValue in worker');
+
+done();