Introduce kRegisterSize, kPCOnStackSize and kFPOnStackSize constants

src/deoptimizer.h

Index: src/deoptimizer.h
diff --git a/src/deoptimizer.h b/src/deoptimizer.h
index d28be236ed7908a99cf89ea568b46312ac0ed0ee..b29c1cba02d9feaeb1b5eb86c29bfd2906dd8e7a 100644
--- a/src/deoptimizer.h
+++ b/src/deoptimizer.h
@@ -510,6 +510,10 @@ class FrameDescription {
     *GetFrameSlotPointer(offset) = value;
   }
 
+  void SetCallerPc(unsigned offset, intptr_t value);
+
+  void SetCallerFp(unsigned offset, intptr_t value);
+
   intptr_t GetRegister(unsigned n) const {
     ASSERT(n < ARRAY_SIZE(registers_));
     return registers_[n];