Revert of Remove SIMD.js from V8.

test/simdjs/harness-adapt.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+(function() {
+
+"use strict";
+
+var _oldLoad = load;
+
+// Filter load paths in the ecmascript_simd tests that
+// assume the test is run with a current working directory
+// set to the directory containing the test.
+load = function(filename) {
+  // Decide if this is the compliance test or the benchmarks.
+  if (filename === 'ecmascript_simd.js' ||
+      filename === 'ecmascript_simd_tests.js') {
+    _oldLoad('test/simdjs/data/src/' + filename);
+  } else {
+    _oldLoad('test/simdjs/data/src/benchmarks/' + filename);
+  }
+};
+
+// To enable SIMD polyfill, load ecmascript_simd.js here,
+// add to resources in SimdJs.json as well as the script
+// to re-generate SimdJs.json.
+
+load('base.js');
+
+})();
+
+// ecmascript_simd_tests logs errors to the console.
+var console = {
+  log: function(x) { print(x); },
+};
+
+
+// Disable value type tests for now. The value semantics tests are incorrect.
+// TODO(bbudge): Drop when tests are fixed.
+var skipValueTests = true;