Derive kMaximumSlots in ConstructorBuiltins from kMaxRegularHeapObjectSize.

Bug: chromium:852420
Change-Id: I348dbf52bc43078861e40e8377257c8f9a2bc920
Reviewed-on: https://chromium-review.googlesource.com/c/1349242Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57791}

src/builtins/builtins-constructor.h

@@ -31,7 +31,9 @@ class ConstructorBuiltins {
       NameDictionary::kMaxRegularCapacity / 3 * 2;
 
  private:
-  static const int kMaximumSlots = 0x8000;
+  static const int kMaximumSlots =
+      (kMaxRegularHeapObjectSize - FixedArray::kHeaderSize) / kPointerSize -
+      Context::MIN_CONTEXT_SLOTS - 1;
   static const int kSmallMaximumSlots = 10;
 
   // FastNewFunctionContext can only allocate closures which fit in the