[turbofan] Simplifying handling of callee-cleanup stack area.

test/cctest/compiler/test-linkage.cc

Index: test/cctest/compiler/test-linkage.cc
diff --git a/test/cctest/compiler/test-linkage.cc b/test/cctest/compiler/test-linkage.cc
index 252c43133e204c70fc13821a249b036aaea59e71..cbfde03ca665e75e1ea69dc050b0617a56e7dd10 100644
--- a/test/cctest/compiler/test-linkage.cc
+++ b/test/cctest/compiler/test-linkage.cc
@@ -80,7 +80,7 @@ TEST(TestLinkageCodeStubIncoming) {
   CompilationInfo info(&stub, isolate, &zone);
   CallDescriptor* descriptor = Linkage::ComputeIncoming(&zone, &info);
   CHECK(descriptor);
-  CHECK_EQ(1, static_cast<int>(descriptor->JSParameterCount()));
+  CHECK_EQ(0, static_cast<int>(descriptor->StackParameterCount()));
   CHECK_EQ(1, static_cast<int>(descriptor->ReturnCount()));
   CHECK_EQ(Operator::kNoProperties, descriptor->properties());
   CHECK_EQ(false, descriptor->IsJSFunctionCall());