factor out "ReloadContextFromFrame"

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 3d3dabca4fb76948761d7652c9b51d2ebf302888..a46c3c1809446149e87e52a762cf6252a7573af1 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -2337,6 +2337,11 @@ void MacroAssembler::GetBuiltinEntry(Register target, Builtins::JavaScript id) {
 }
 
 
+void MacroAssembler::ReloadContextFromFrame() {
+  mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset));
+}
+
+
 void MacroAssembler::LoadContext(Register dst, int context_chain_length) {
   if (context_chain_length > 0) {
     // Move up the chain of contexts to the context containing the slot.