Remove special charAt and charCodeAt handling in the ICs.

src/ic.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 265 matching lines @@
 
   Address address() const { return address_; }
 
   IC::UtilityId id() const { return id_; }
  private:
   Address address_;
   IC::UtilityId id_;
 };
 
 
-enum StringStubFeedback {
-  DEFAULT_STRING_STUB = 0,
-  STRING_INDEX_OUT_OF_BOUNDS = 1
-};
-
-
 class CallICBase: public IC {
  public:
-  // ExtraICState bits
-  class StringStubState: public BitField<StringStubFeedback, 0, 1> {};
-  static ExtraICState ComputeExtraICState(StringStubFeedback feedback) {
-    return StringStubState::encode(feedback);
-  }
-
   // Returns a JSFunction or a Failure.
   MUST_USE_RESULT MaybeObject* LoadFunction(Handle<Object> object,
                                             Handle<String> name);
 
  protected:
   CallICBase(Code::Kind kind, Isolate* isolate)
       : IC(EXTRA_CALL_FRAME, isolate), kind_(kind) {}
 
   // Compute a monomorphic stub if possible, otherwise return a null handle.
   Handle<Code> ComputeMonomorphicStub(LookupResult* lookup,
@@ skipping 707 matching lines @@
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, ElementsTransitionAndStoreIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, BinaryOpIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, BinaryOpIC_MissWithAllocationSite);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, CompareNilIC_Miss);
 DECLARE_RUNTIME_FUNCTION(MaybeObject*, ToBooleanIC_Miss);
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IC_H_