[crankshaft] Fixing ES6 tail call elimination.

src/crankshaft/hydrogen.h

Index: src/crankshaft/hydrogen.h
diff --git a/src/crankshaft/hydrogen.h b/src/crankshaft/hydrogen.h
index 4bbae824507f1440bc75536760396b31595b2e14..857484c0001bc125bf47f3094564f8f320f2e0a8 100644
--- a/src/crankshaft/hydrogen.h
+++ b/src/crankshaft/hydrogen.h
@@ -2835,16 +2835,19 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
                              Handle<Map> receiver_map);
 
   HInstruction* NewCallFunction(HValue* function, int argument_count,
+                                TailCallMode syntactic_tail_call_mode,
                                 ConvertReceiverMode convert_mode,
                                 TailCallMode tail_call_mode);
 
   HInstruction* NewCallFunctionViaIC(HValue* function, int argument_count,
+                                     TailCallMode syntactic_tail_call_mode,
                                      ConvertReceiverMode convert_mode,
                                      TailCallMode tail_call_mode,
                                      FeedbackVectorSlot slot);
 
   HInstruction* NewCallConstantFunction(Handle<JSFunction> target,
                                         int argument_count,
+                                        TailCallMode syntactic_tail_call_mode,
                                         TailCallMode tail_call_mode);
 
   bool CanBeFunctionApplyArguments(Call* expr);