Deoptimization fix for HPushArgument.

src/lithium-allocator.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 29 matching lines @@
 // Forward declarations.
 class HBasicBlock;
 class HGraph;
 class HInstruction;
 class HPhi;
 class HTracer;
 class HValue;
 class BitVector;
 class StringStream;
 
-class LArgument;
 class LPlatformChunk;
 class LOperand;
 class LUnallocated;
 class LConstantOperand;
 class LGap;
 class LParallelMove;
 class LPointerMap;
 class LStackSlot;
 class LRegister;
 
@@ skipping 591 matching lines @@
   LAllocator* allocator_;
   unsigned allocator_zone_start_allocation_size_;
 
   DISALLOW_COPY_AND_ASSIGN(LAllocatorPhase);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LITHIUM_ALLOCATOR_H_