Perform TODO(gc) cleanup for TODO-lockdown.

src/liveedit.cc

 // 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 964 matching lines @@
 
   // Post-visiting method that iterates over all collected references and
   // modifies them.
   void Replace(Code* substitution) {
     for (int i = 0; i < rvalues_.length(); i++) {
       *(rvalues_[i]) = substitution;
     }
     Address substitution_entry = substitution->instruction_start();
     for (int i = 0; i < reloc_infos_.length(); i++) {
       reloc_infos_[i].set_target_address(substitution_entry, NULL);
-      // TODO(gc) more precise barrier.
-      // TODO(gc) ISOLATES MERGE: code object should have heap() accessor.
       substitution->GetHeap()->incremental_marking()->RecordWriteOf(
           substitution);
     }
     for (int i = 0; i < code_entries_.length(); i++) {
       Address entry = code_entries_[i];
       Memory::Address_at(entry) = substitution_entry;
     }
   }
 
  private:
@@ skipping 790 matching lines @@
 
 bool LiveEditFunctionTracker::IsActive(Isolate* isolate) {
   return false;
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 
 } }  // namespace v8::internal