Implement handlified String::Equals and Name::Equals.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index e7a5c23259d53b93c691533028c5687a5c9be964..69a7c756a5c96637ff6d023c0a5ebca5d418fa95 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -3046,6 +3046,17 @@ bool Name::Equals(Name* other) {
 }
 
 
+bool Name::Equals(Handle<Name> one, Handle<Name> two) {
+  if (one.is_identical_to(two)) return true;
+  if ((one->IsInternalizedString() && two->IsInternalizedString()) ||
+      one->IsSymbol() || two->IsSymbol()) {
+    return false;
+  }
+  return String::SlowEquals(Handle<String>::cast(one),
+                            Handle<String>::cast(two));
+}
+
+
 ACCESSORS(Symbol, name, Object, kNameOffset)
 ACCESSORS(Symbol, flags, Smi, kFlagsOffset)
 BOOL_ACCESSORS(Symbol, flags, is_private, kPrivateBit)
@@ -3060,6 +3071,15 @@ bool String::Equals(String* other) {
 }
 
 
+bool String::Equals(Handle<String> one, Handle<String> two) {
+  if (one.is_identical_to(two)) return true;
+  if (one->IsInternalizedString() && two->IsInternalizedString()) {
+    return false;
+  }
+  return SlowEquals(one, two);
+}
+
+
 Handle<String> String::Flatten(Handle<String> string, PretenureFlag pretenure) {
   if (!string->IsConsString()) return string;
   Handle<ConsString> cons = Handle<ConsString>::cast(string);
@@ -3068,22 +3088,6 @@ Handle<String> String::Flatten(Handle<String> string, PretenureFlag pretenure) {
 }
 
 
-MaybeObject* String::TryFlatten(PretenureFlag pretenure) {
-  if (!StringShape(this).IsCons()) return this;
-  ConsString* cons = ConsString::cast(this);
-  if (cons->IsFlat()) return cons->first();
-  return SlowTryFlatten(pretenure);
-}
-
-
-String* String::TryFlattenGetString(PretenureFlag pretenure) {
-  MaybeObject* flat = TryFlatten(pretenure);
-  Object* successfully_flattened;
-  if (!flat->ToObject(&successfully_flattened)) return this;
-  return String::cast(successfully_flattened);
-}
-
-
 uint16_t String::Get(int index) {
   ASSERT(index >= 0 && index < length());
   switch (StringShape(this).full_representation_tag()) {