Fix calls of strict mode function with an implicit receiver.

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 64f42f49ee21948aae4fea68997b043461127ced..39322b9b932d1411e4202973142972eef173959e 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -2769,6 +2769,15 @@ void MacroAssembler::DebugBreak() {
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
+void MacroAssembler::SetReceiverType(Register dst, ReceiverType receiver_type) {
+  if (receiver_type == IMPLICIT_RECEIVER) {
+    Set(dst, Smi::FromInt(1));
+  } else {
+    Set(dst, Smi::FromInt(0));
+  }
+}
+
+
 void MacroAssembler::InvokeCode(Register code,
                                 const ParameterCount& expected,
                                 const ParameterCount& actual,