Add Float64x2, Float64x2List, etc... with runtime and dart2js implementations

runtime/vm/raw_object.cc

Index: runtime/vm/raw_object.cc
diff --git a/runtime/vm/raw_object.cc b/runtime/vm/raw_object.cc
index 3fcb21216005bf0a604223caec0d6f10f1912649..f9df8e50bebc9dfeb6f1cb22504ce6cb209235cf 100644
--- a/runtime/vm/raw_object.cc
+++ b/runtime/vm/raw_object.cc
@@ -792,6 +792,13 @@ intptr_t RawInt32x4::VisitInt32x4Pointers(
 }
 
 
+intptr_t RawFloat64x2::VisitFloat64x2Pointers(
+    RawFloat64x2* raw_obj,
+    ObjectPointerVisitor* visitor) {
+    ASSERT(raw_obj->IsHeapObject());
+    return Float64x2::InstanceSize();
+}
+
 intptr_t RawTypedData::VisitTypedDataPointers(
     RawTypedData* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.