Get rid of the unused __my_bool__ macro.

src/globals.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_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 71 matching lines @@
 #endif
 
 
 // Determine whether double field unboxing feature is enabled.
 #if (V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64)
 #define V8_DOUBLE_FIELDS_UNBOXING 1
 #else
 #define V8_DOUBLE_FIELDS_UNBOXING 0
 #endif
 
-// Support for alternative bool type. This is only enabled if the code is
-// compiled with USE_MYBOOL defined. This catches some nasty type bugs.
-// For instance, 'bool b = "false";' results in b == true! This is a hidden
-// source of bugs.
-// However, redefining the bool type does have some negative impact on some
-// platforms. It gives rise to compiler warnings (i.e. with
-// MSVC) in the API header files when mixing code that uses the standard
-// bool with code that uses the redefined version.
-// This does not actually belong in the platform code, but needs to be
-// defined here because the platform code uses bool, and platform.h is
-// include very early in the main include file.
-
-#ifdef USE_MYBOOL
-typedef unsigned int __my_bool__;
-#define bool __my_bool__  // use 'indirection' to avoid name clashes
-#endif
 
 typedef uint8_t byte;
 typedef byte* Address;
 
 // -----------------------------------------------------------------------------
 // Constants
 
 const int KB = 1024;
 const int MB = KB * KB;
 const int GB = KB * KB * KB;
@@ skipping 704 matching lines @@
   DCHECK(IsValidFunctionKind(kind));
   return kind & FunctionKind::kDefaultConstructor;
 }
 
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_