[date] Use explicit control flow to replace %_ThrowIfNotADate.

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index 27665522bbdb0e922563a0211b34e3e811e6d977..3452f577f8499ebba904885267361703e3b964c9 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -394,6 +394,7 @@ class OptimizedFunctionVisitor BASE_EMBEDDED {
   V(kNoCache, "no cache")                                                      \
   V(kNonStrictElementsInKeyedLoadGenericStub,                                  \
     "non-strict elements in KeyedLoadGenericStub")                             \
+  V(kNotADateObject, "not a date object")                                      \
   V(kNotAHeapNumber, "not a heap number")                                      \
   V(kNotAHeapNumberUndefinedBoolean, "not a heap number/undefined/true/false") \
   V(kNotAHeapNumberUndefined, "not a heap number/undefined")                   \