Remove CallFunctionStub, always call through the Call builtin (also from CallIC)

src/ic/ic.cc

Index: src/ic/ic.cc
diff --git a/src/ic/ic.cc b/src/ic/ic.cc
index 39ee7db9552f808e96931467544512a5f9cb4ee5..fca71e1f47712e02179f96251a2a8b7ef8c039be 100644
--- a/src/ic/ic.cc
+++ b/src/ic/ic.cc
@@ -1584,17 +1584,16 @@ MaybeHandle<Object> StoreIC::Store(Handle<Object> object, Handle<Name> name,
 }
 
 
-Handle<Code> CallIC::initialize_stub(Isolate* isolate, int argc,
-                                     CallICState::CallType call_type) {
-  CallICTrampolineStub stub(isolate, CallICState(argc, call_type));
+Handle<Code> CallIC::initialize_stub(Isolate* isolate, int argc) {
+  CallICTrampolineStub stub(isolate, CallICState(argc));
   Handle<Code> code = stub.GetCode();
   return code;
 }
 
 
-Handle<Code> CallIC::initialize_stub_in_optimized_code(
-    Isolate* isolate, int argc, CallICState::CallType call_type) {
-  CallICStub stub(isolate, CallICState(argc, call_type));
+Handle<Code> CallIC::initialize_stub_in_optimized_code(Isolate* isolate,
+                                                       int argc) {
+  CallICStub stub(isolate, CallICState(argc));
   Handle<Code> code = stub.GetCode();
   return code;
 }