Replace special IC builtins and stubs in the map's cache by codestubs.

src/stub-cache.cc

Index: src/stub-cache.cc
diff --git a/src/stub-cache.cc b/src/stub-cache.cc
index 1f954edfa782250d7060a618d00319aad1915619..ba681ca9f810007f05979beaf20068427de4107a 100644
--- a/src/stub-cache.cc
+++ b/src/stub-cache.cc
@@ -365,23 +365,6 @@ Handle<Code> StubCache::ComputeKeyedLoadArrayLength(Handle<String> name,
 }
 
 
-Handle<Code> StubCache::ComputeKeyedLoadStringLength(Handle<String> name,
-                                                     Handle<String> receiver) {
-  Code::Flags flags =
-      Code::ComputeMonomorphicFlags(Code::KEYED_LOAD_IC, Code::CALLBACKS);
-  Handle<Map> map(receiver->map());
-  Handle<Object> probe(map->FindInCodeCache(*name, flags), isolate_);
-  if (probe->IsCode()) return Handle<Code>::cast(probe);
-
-  KeyedLoadStubCompiler compiler(isolate_);
-  Handle<Code> code = compiler.CompileLoadStringLength(name);
-  PROFILE(isolate_, CodeCreateEvent(Logger::KEYED_LOAD_IC_TAG, *code, *name));
-  GDBJIT(AddCode(GDBJITInterface::KEYED_LOAD_IC, *name, *code));
-  Map::UpdateCodeCache(map, name, code);
-  return code;
-}
-
-
 Handle<Code> StubCache::ComputeKeyedLoadFunctionPrototype(
     Handle<String> name,
     Handle<JSFunction> receiver) {