Inline SetLengthWithoutNormalize into its callers

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 0cfee84e9ee14192b5ec994640a2e5af6dc1b2d3..e417e32582a662be111d28aaf5af2bfd8944fd27 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2033,7 +2033,7 @@ class JSObject: public JSReceiver {
   bool ShouldConvertToFastDoubleElements(bool* has_smi_only_elements);
 
   // Computes the new capacity when expanding the elements of a JSObject.
-  static int NewElementsCapacity(int old_capacity) {
+  static uint32_t NewElementsCapacity(uint32_t old_capacity) {
     // (old_capacity + 50%) + 16
     return old_capacity + (old_capacity >> 1) + 16;
   }