Remove unused heap debug utils code.

src/heap.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 268 matching lines @@
   // iterating over the current page, finding pointers to new space.  If the
   // store buffer overflows again we can exempt the page from the store buffer
   // by rewinding to this point instead of having to search the store buffer.
   Object*** start_of_current_page_;
   // The current page we are scanning in the store buffer iterator.
   MemoryChunk* current_page_;
 };
 
 
 
-// The all static Heap captures the interface to the global object heap.
-// All JavaScript contexts by this process share the same object heap.
-
-#ifdef DEBUG
-class HeapDebugUtils;
-#endif
-
 

[Michael Starzinger, 2012/11/26 10:09:57]

Drop the third empty newline.

 // A queue of objects promoted during scavenge. Each object is accompanied
 // by it's size to avoid dereferencing a map pointer for scanning.
 class PromotionQueue {
  public:
   explicit PromotionQueue(Heap* heap)
       : front_(NULL),
         rear_(NULL),
         limit_(NULL),
         emergency_stack_(0),
         heap_(heap) { }
@@ skipping 1479 matching lines @@
   bool allocation_allowed_;
 
   // If the --gc-interval flag is set to a positive value, this
   // variable holds the value indicating the number of allocations
   // remain until the next failure and garbage collection.
   int allocation_timeout_;
 
   // Do we expect to be able to handle allocation failure at this
   // time?
   bool disallow_allocation_failure_;
 

[Michael Starzinger, 2012/11/26 10:09:57]

Drop the empty newline.

-  HeapDebugUtils* debug_utils_;
 #endif  // DEBUG
 
   // Indicates that the new space should be kept small due to high promotion
   // rates caused by the mutator allocating a lot of long-lived objects.
   bool new_space_high_promotion_mode_active_;
 
   // Limit that triggers a global GC on the next (normally caused) GC.  This
   // is checked when we have already decided to do a GC to help determine
   // which collector to invoke.
   intptr_t old_gen_promotion_limit_;
@@ skipping 1020 matching lines @@
   AssertNoAllocation no_alloc;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG || LIVE_OBJECT_LIST
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_