Avoid accessing Isolate in source position logging.

src/objects.h

 // Copyright 2015 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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 5550 matching lines @@
 
   // Returns the address right after the last instruction.
   inline Address instruction_end();
 
   // Returns the size of the code instructions.
   inline int instruction_size();
 
   // Return the source position table.
   inline ByteArray* source_position_table();
 
+  // Set the source position table.
+  inline void set_source_position_table(ByteArray* source_position_table);
+
   // Return the exception handler table.
   inline int LookupRangeInHandlerTable(
       int code_offset, int* data, HandlerTable::CatchPrediction* prediction);
 
   // Returns the size of instructions and the metadata.
   inline int SizeIncludingMetadata();
 
   // Returns true if pc is inside this object's instructions.
   inline bool contains(byte* pc);
 
@@ skipping 5500 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_