Fix ARM build for changes to VirtualFrame

src/virtual-frame-arm.h

 // Copyright 2008 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 320 matching lines @@
   int local_count_;
 
   // The index of the element that is at the processor's stack pointer
   // (the sp register).
   int stack_pointer_;
 
   // The index of the element that is at the processor's frame pointer
   // (the fp register).
   int frame_pointer_;
 
+  // The index of the register frame element using each register, or
+  // kIllegalIndex if a register is not on the frame.
+  int register_locations_[kNumRegisters];
+
   // The frame has an embedded register file that it uses to track registers
   // used in the frame.
   RegisterFile frame_registers_;
 
   // The index of the first parameter.  The receiver lies below the first
   // parameter.
   int param0_index() const { return 1; }
 
   // The index of the context slot in the frame.
   int context_index() const {
@@ skipping 107 matching lines @@
 
   bool Equals(VirtualFrame* other);
 
   friend class JumpTarget;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_VIRTUAL_FRAME_ARM_H_