Fix calls of strict mode function with an implicit receiver.

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index d7d5af3bd33e704bc2c07291c33edef6d8b0fa70..e4af0b7b9afb34058ff350068a69c493be40c0b3 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -241,6 +241,9 @@ class MacroAssembler: public Assembler {
   // ---------------------------------------------------------------------------
   // JavaScript invokes
 
+  // Setup implicit/explicit receiver marking in specified register.
+  void SetReceiverType(Register dst, ReceiverType type);
+
   // Invoke the JavaScript function code by either calling or jumping.
   void InvokeCode(Register code,
                   const ParameterCount& expected,