Revert of Remove SIMD.js from V8.

src/profiler/heap-snapshot-generator.h

Index: src/profiler/heap-snapshot-generator.h
diff --git a/src/profiler/heap-snapshot-generator.h b/src/profiler/heap-snapshot-generator.h
index 16b9b4c8fa552bd494bc8e2aaebdc30ca7ef0e48..431d885866de73db2f5aa64ae0caeccee3787658 100644
--- a/src/profiler/heap-snapshot-generator.h
+++ b/src/profiler/heap-snapshot-generator.h
@@ -92,7 +92,8 @@
     kSynthetic = v8::HeapGraphNode::kSynthetic,
     kConsString = v8::HeapGraphNode::kConsString,
     kSlicedString = v8::HeapGraphNode::kSlicedString,
-    kSymbol = v8::HeapGraphNode::kSymbol
+    kSymbol = v8::HeapGraphNode::kSymbol,
+    kSimdValue = v8::HeapGraphNode::kSimdValue
   };
   static const int kNoEntry;