[es6] [interpreter] Add tail calls support to Ignition.

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index b235f0ae0f9541a22ef575e00336cad23dc38436..5fd1fa33a398d1311a65d83bf9452b2d8a39a16d 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -86,7 +86,7 @@ class Interpreter {
   void DoKeyedStoreIC(Callable ic, InterpreterAssembler* assembler);
 
   // Generates code to perform a JS call.
-  void DoJSCall(InterpreterAssembler* assembler);
+  void DoJSCall(InterpreterAssembler* assembler, TailCallMode tail_call_mode);
 
   // Generates code to perform a runtime call.
   void DoCallRuntimeCommon(InterpreterAssembler* assembler);