Allow embedding of ConsString objects into code.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 584dba5998c0e461383e3668678f2dc5b73d78eb..fc78e53ca90242a36e730d7283e6eb2bfcd902d0 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -16900,10 +16900,9 @@ Handle<HeapType> PropertyCell::UpdatedType(Handle<PropertyCell> cell,
                                            Handle<Object> value) {
   Isolate* isolate = cell->GetIsolate();
   Handle<HeapType> old_type(cell->type(), isolate);
-  // TODO(2803): Do not track ConsString as constant because they cannot be
-  // embedded into code.
-  Handle<HeapType> new_type = value->IsConsString() || value->IsTheHole()
-      ? HeapType::Any(isolate) : HeapType::Constant(value, isolate);
+  Handle<HeapType> new_type = value->IsTheHole()
+                                  ? HeapType::Any(isolate)
+                                  : HeapType::Constant(value, isolate);
 
   if (new_type->Is(old_type)) {
     return old_type;