Remove unused function AddGapMove from the register allocator.

src/lithium-allocator.h

 // Copyright 2010 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 573 matching lines @@
 
   // Spill the given life range after position start and up to position end.
   void SpillBetween(LiveRange* range,
                     LifetimePosition start,
                     LifetimePosition end);
 
   void SplitAndSpillIntersecting(LiveRange* range);
 
   void Spill(LiveRange* range);
   bool IsBlockBoundary(LifetimePosition pos);
-  void AddGapMove(int pos, LiveRange* prev, LiveRange* next);
 
   // Helper methods for resolving control flow.
   void ResolveControlFlow(LiveRange* range,
                           HBasicBlock* block,
                           HBasicBlock* pred);
 
   // Return parallel move that should be used to connect ranges split at the
   // given position.
   LParallelMove* GetConnectingParallelMove(LifetimePosition pos);
 
@@ skipping 51 matching lines @@
 
   bool has_osr_entry_;
 
   DISALLOW_COPY_AND_ASSIGN(LAllocator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LITHIUM_ALLOCATOR_H_