Unify InvokeBuiltin implementations across architectures.

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 59288e06b60ded9f695e44a1a301ab3ea86bedb5..e8e1c7508b2ccb427afc98aab4a934fc96bc872f 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -704,9 +704,7 @@ void MacroAssembler::InvokeBuiltin(int native_context_index, InvokeFlag flag,
   // You can't call a builtin without a valid frame.
   DCHECK(flag == JUMP_FUNCTION || has_frame());
 
-  // Rely on the assertion to check that the number of provided
-  // arguments match the expected number of arguments. Fake a
-  // parameter count to avoid emitting code to do the check.
+  // Fake a parameter count to avoid emitting code to do the check.
   ParameterCount expected(0);
   LoadNativeContextSlot(native_context_index, rdi);
   InvokeFunctionCode(rdi, no_reg, expected, expected, flag, call_wrapper);