[simd.js] Disable SIMD polyfill.

Disable the polyfill in simd.js tests as the functions for Phase 1 have been implemented.

BUG=v8:4124
LOG=N

R=bbudge@chromium.org, bmeurer@chromium.org, littledan@chromium.org

Review URL: https://codereview.chromium.org/1305923005

Cr-Commit-Position: refs/heads/master@{#30452}

test/simdjs/SimdJs.json

@@ -9,7 +9,6 @@
   ],
   "resources": [
     "test/simdjs/data/src/benchmarks/base.js",
-    "test/simdjs/data/src/ecmascript_simd.js",
     "test/simdjs/harness-adapt.js",
     "test/simdjs/harness-finish.js",
     "test/simdjs/data/src/benchmarks/kernel-template.js",

test/simdjs/generate.py

@@ -37,7 +37,6 @@ output = {
   'units': 'ms',
   'resources': [
     'test/simdjs/data/src/benchmarks/base.js',
-    'test/simdjs/data/src/ecmascript_simd.js',
     'test/simdjs/harness-adapt.js',
     'test/simdjs/harness-finish.js'
   ] + ['test/simdjs/data/src/benchmarks/%s.js' % t for t in tests],

test/simdjs/harness-adapt.js

@@ -21,8 +21,9 @@ load = function(filename) {
   }
 };
 
-// TODO(bbudge): Drop when polyfill is not needed.
-load('ecmascript_simd.js');
+// To enable SIMD polyfill, load ecmascript_simd.js here and
+// add to resources in SimdJs.json as well as the script to
+// re-generate SimdJs.json.
 
 load('base.js');