Introduce kRegisterSize, kPCOnStackSize and kFPOnStackSize constants

src/deoptimizer.h

Index: src/deoptimizer.h
===================================================================
--- src/deoptimizer.h	(revision 15739)
+++ src/deoptimizer.h	(working copy)
@@ -473,6 +473,7 @@
  public:
   FrameDescription(uint32_t frame_size,
                    JSFunction* function);
+  virtual ~FrameDescription() { }
 
   void* operator new(size_t size, uint32_t frame_size) {
     // Subtracts kPointerSize, as the member frame_content_ already supplies
@@ -510,6 +511,10 @@
     *GetFrameSlotPointer(offset) = value;
   }
 
+  virtual void SetCallerPc(unsigned offset, intptr_t value);
+
+  virtual void SetCallerFp(unsigned offset, intptr_t value);
+
   intptr_t GetRegister(unsigned n) const {
     ASSERT(n < ARRAY_SIZE(registers_));
     return registers_[n];