Minor cleanup IC keyed access handling.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 16938972ba28f1a2af618a731cb2314502adf6d2..a1c2ba11c493eea1baf18bb92ca3278ea55a34f9 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1163,10 +1163,6 @@ class Object {
                                           Handle<Object> object,
                                           Handle<Context> context);
 
-  // Converts this to a Smi if possible.
-  MUST_USE_RESULT static inline MaybeHandle<Smi> ToSmi(Isolate* isolate,
-                                                       Handle<Object> object);
-
   MUST_USE_RESULT static MaybeHandle<Object> GetProperty(
       LookupIterator* it, LanguageMode language_mode = SLOPPY);
 
@@ -2019,7 +2015,6 @@ class JSObject: public JSReceiver {
   // Would we convert a fast elements array to dictionary mode given
   // an access at key?
   bool WouldConvertToSlowElements(uint32_t index);
-  inline bool WouldConvertToSlowElements(Handle<Object> key);
 
   // Computes the new capacity when expanding the elements of a JSObject.
   static uint32_t NewElementsCapacity(uint32_t old_capacity) {