Introduce concurrent on-stack replacement.

src/objects.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 5084 matching lines @@
 
   template<typename StaticVisitor>
   inline void CodeIterateBody(Heap* heap);
 
   DECLARE_PRINTER(Code)
   DECLARE_VERIFIER(Code)
 
   void ClearInlineCaches();
   void ClearTypeFeedbackCells(Heap* heap);
 
+  BailoutId TranslatePcOffsetToAstId(uint32_t pc_offset);
+
 #define DECLARE_CODE_AGE_ENUM(X) k##X##CodeAge,
   enum Age {
     kNoAge = 0,
     CODE_AGE_LIST(DECLARE_CODE_AGE_ENUM)
     kAfterLastCodeAge,
     kLastCodeAge = kAfterLastCodeAge - 1,
     kCodeAgeCount = kAfterLastCodeAge - 1
   };
 #undef DECLARE_CODE_AGE_ENUM
 
@@ skipping 5044 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_