factor out "ReloadContextFromFrame"

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index b3dae7320fe22e6fe6bafc765a7cf6321d9c717d..b5a52713d6cc1e0e573b1740b296339576d2686d 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -229,6 +229,9 @@ class MacroAssembler: public Assembler {
   // register eax (untouched).
   void LeaveApiExitFrame();
 
+  // Reload the context register from a standard stack frame.
+  void ReloadContextFromFrame();
+
   // Find the function context up the context chain.
   void LoadContext(Register dst, int context_chain_length);