Disallow SharedArrayBuffer in postMessage transfer list

third_party/WebKit/LayoutTests/fast/workers/resources/worker-sharedarraybuffer-transfer.js

 function verifyArray(ta, length) {
+    var i;
     for (i = 0; i < length; ++i) {
         if (ta[i] != i) {
             postMessage("FAIL: Transferred data is incorrect. Expected " +
                 i + " got " + ta[i]);
             return;
         }
     }
     postMessage("PASS: Transferred data is OK.");
 }
 
 function verifyArrayType(ta, name) {
     var className = Object.prototype.toString.call(ta);
     if (className.indexOf(name) != -1)
         postMessage("PASS: Transferred array type is OK.");
     else
         postMessage("FAIL: Expected array type " + name + " got " + className);
 }
 
 self.addEventListener('message', function(e) {
-    var i;
+    var ab;
     var sab;
+    var sab2;
     var ta;
 
     switch (e.data.name) {
         case 'SharedArrayBuffer':
             sab = e.data.data;
             ta = new Uint8Array(sab);
             verifyArray(ta, e.data.length);
             break;
 
         case 'Int8Array':
         case 'Uint8Array':
         case 'Uint8ClampedArray':
         case 'Int16Array':
         case 'Uint16Array':
         case 'Int32Array':
         case 'Uint32Array':
         case 'Float32Array':
         case 'Float64Array':
             ta = e.data.data;
             verifyArrayType(ta, e.data.name);
             verifyArray(ta, e.data.length);
             break;
 
+        case 'ArrayBufferAndSharedArrayBuffer':
+            ab = e.data.ab;
+            sab = e.data.sab;
+            verifyArray(new Uint8Array(ab), e.data.abByteLength);
+            verifyArray(new Uint8Array(sab), e.data.sabByteLength);
+            break;
+
+        case 'SharedArrayBufferTwice':
+            sab = e.data.sab;
+            sab2 = e.data.sab2;
+            if (sab !== sab2) {
+                postMessage('FAIL: Expected two SharedArrayBuffers to be equal.');
+            }
+            verifyArray(new Uint8Array(sab), e.data.sabByteLength);
+            break;
+
         default:
             postMessage("ERROR: unknown command " + e.data.name);
             break;
     }
     postMessage("DONE");
 });