[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix.html

Index: third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix.html
diff --git a/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix.html b/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix.html
index 998c3daa58a1dfba068d886cfb2e3a135fc72a91..525425f496662d3c9f04512ddacbe8e7002f1246 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix.html
+++ b/third_party/WebKit/LayoutTests/fast/dom/geometry-interfaces-dom-matrix.html
@@ -120,6 +120,15 @@ test(() => {
     "fromFloat64Array function only accepts 1 Float64Array with 6 or 16 elements");
 }, "DOMMatrix fromFloat*Array - invalid array size");
 
+if (window.SharedArrayBuffer) {
+  test(() => {
+    assert_throws(new TypeError(), () => { DOMMatrix.fromFloat32Array(new Float32Array(new SharedArrayBuffer(24))); },
+      "");
+    assert_throws(new TypeError(), () => { DOMMatrix.fromFloat64Array(new Float64Array(new SharedArrayBuffer(32))); },
+      "");
+  }, "DOMMatrix fromFloat*Array - can't use SharedArrayBuffer view");
+}
+
 test(() => {
   assert_identity_2d_matrix(DOMMatrix.fromMatrix());
 }, "DOMMatrix.fromMatrix() with no parameter");