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

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index e451b0467632bbc2612e55dd01d59ec5a867e744..e168b9d20cbe082d21fa482239c8a6d7da752dee 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -58,19 +58,16 @@ Callable CodeFactory::KeyedLoadICInOptimizedCode(
 
 
 // static
-Callable CodeFactory::CallIC(Isolate* isolate, int argc,
-                             CallICState::CallType call_type) {
-  return Callable(CallIC::initialize_stub(isolate, argc, call_type),
+Callable CodeFactory::CallIC(Isolate* isolate, int argc) {
+  return Callable(CallIC::initialize_stub(isolate, argc),
                   CallFunctionWithFeedbackDescriptor(isolate));
 }
 
 
 // static
-Callable CodeFactory::CallICInOptimizedCode(Isolate* isolate, int argc,
-                                            CallICState::CallType call_type) {
-  return Callable(
-      CallIC::initialize_stub_in_optimized_code(isolate, argc, call_type),
-      CallFunctionWithFeedbackAndVectorDescriptor(isolate));
+Callable CodeFactory::CallICInOptimizedCode(Isolate* isolate, int argc) {
+  return Callable(CallIC::initialize_stub_in_optimized_code(isolate, argc),
+                  CallFunctionWithFeedbackAndVectorDescriptor(isolate));
 }
 
 
@@ -288,14 +285,6 @@ Callable CodeFactory::AllocateInNewSpace(Isolate* isolate) {
 
 
 // static
-Callable CodeFactory::CallFunction(Isolate* isolate, int argc,
-                                   CallFunctionFlags flags) {
-  CallFunctionStub stub(isolate, argc, flags);
-  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
-}
-
-
-// static
 Callable CodeFactory::ArgumentAdaptor(Isolate* isolate) {
   return Callable(isolate->builtins()->ArgumentsAdaptorTrampoline(),
                   ArgumentAdaptorDescriptor(isolate));