Make ToBooleanStub more consistent across platforms.

src/x64/code-stubs-x64.h

 // Copyright 2011 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 41 matching lines @@
   TranscendentalCache::Type type_;
   ArgumentType argument_type_;
 
   Major MajorKey() { return TranscendentalCache; }
   int MinorKey() { return type_ | argument_type_; }
   Runtime::FunctionId RuntimeFunction();
   void GenerateOperation(MacroAssembler* masm);
 };
 
 
-class ToBooleanStub: public CodeStub {
- public:
-  ToBooleanStub() { }
-
-  void Generate(MacroAssembler* masm);
-
- private:
-  Major MajorKey() { return ToBoolean; }
-  int MinorKey() { return 0; }
-};
-
-
 class UnaryOpStub: public CodeStub {
  public:
   UnaryOpStub(Token::Value op, UnaryOverwriteMode mode)
       : op_(op),
         mode_(mode),
         operand_type_(UnaryOpIC::UNINITIALIZED),
         name_(NULL) {
   }
 
   UnaryOpStub(
@@ skipping 421 matching lines @@
   Register dictionary_;
   Register result_;
   Register index_;
   LookupMode mode_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_CODE_STUBS_X64_H_