[vm] Rename Integer::IsValidUint64 to IsValueInRange for clarity

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index 269decc2b7ccaab4b3e1bbfd43c76f344c4b76c3..2cac9f950c190b2a57177b881cffb6db21bb2538 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -18162,7 +18162,7 @@ RawInteger* Integer::NewFromUint64(uint64_t value, Heap::Space space) {
   return Integer::New(static_cast<int64_t>(value), space);
 }
 
-bool Integer::IsValidUint64(uint64_t value) {
+bool Integer::IsValueInRange(uint64_t value) {
   if (FLAG_limit_ints_to_64_bits) {
     return (value <= static_cast<uint64_t>(Mint::kMaxValue));
   } else {