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

src/ic/ic-state.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_IC_STATE_H_
 #define V8_IC_STATE_H_
 
 #include "src/macro-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 
 const int kMaxKeyedPolymorphism = 4;
 
 
 class ICUtility : public AllStatic {
  public:
   // Clear the inline cache to initial state.
   static void Clear(Isolate* isolate, Address address, Address constant_pool);
 };
 
 
 class CallICState final BASE_EMBEDDED {
  public:
-  explicit CallICState(ExtraICState extra_ic_state);
-
-  enum CallType { METHOD, FUNCTION };
-
-  CallICState(int argc, CallType call_type)
-      : argc_(argc), call_type_(call_type) {}
+  explicit CallICState(int argc) : argc_(argc) {}
 
   ExtraICState GetExtraICState() const;
 
   static void GenerateAheadOfTime(Isolate*,
                                   void (*Generate)(Isolate*,
                                                    const CallICState&));
 
   int arg_count() const { return argc_; }
-  CallType call_type() const { return call_type_; }
-
-  bool CallAsMethod() const { return call_type_ == METHOD; }
 
  private:
   class ArgcBits : public BitField<int, 0, Code::kArgumentsBits> {};
-  class CallTypeBits : public BitField<CallType, Code::kArgumentsBits, 1> {};
 
   const int argc_;
-  const CallType call_type_;
 };
 
 
 std::ostream& operator<<(std::ostream& os, const CallICState& s);
 
 
 class BinaryOpICState final BASE_EMBEDDED {
  public:
   BinaryOpICState(Isolate* isolate, ExtraICState extra_ic_state);
   BinaryOpICState(Isolate* isolate, Token::Value op, Strength strength)
@@ skipping 206 matching lines @@
                                                << LanguageModeState::kShift;
 
  private:
   const ExtraICState state_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_IC_STATE_H_