Always include debugger support.

src/mark-compact.cc

 // 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 4341 matching lines @@
 }
 
 
 void MarkCompactCollector::ParallelSweepSpacesComplete() {
   ParallelSweepSpaceComplete(heap()->old_pointer_space());
   ParallelSweepSpaceComplete(heap()->old_data_space());
 }
 
 
 void MarkCompactCollector::EnableCodeFlushing(bool enable) {
-#ifdef ENABLE_DEBUGGER_SUPPORT
   if (isolate()->debug()->IsLoaded() ||
       isolate()->debug()->has_break_points()) {
     enable = false;
   }
-#endif
 
   if (enable) {
     if (code_flusher_ != NULL) return;
     code_flusher_ = new CodeFlusher(isolate());
   } else {
     if (code_flusher_ == NULL) return;
     code_flusher_->EvictAllCandidates();
     delete code_flusher_;
     code_flusher_ = NULL;
   }
@@ skipping 200 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal