[cctest] Add FuncNameInferrer coverage for arrow functions

Bug: v8:6822
Change-Id: If6a22e19873b1f3196a4ece48fc79859257ce41d
Reviewed-on: https://chromium-review.googlesource.com/804152Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50118}

test/cctest/test-func-name-inference.cc

@@ -571,3 +571,15 @@ TEST(IgnoreExtendsClause) {
   script->Run(CcTest::isolate()->GetCurrentContext()).ToLocalChecked();
   CheckFunctionName(script, "return 1", "foo.bar");
 }
+
+TEST(ParameterAndArrow) {
+  CcTest::InitializeVM();
+  v8::HandleScope scope(CcTest::isolate());
+
+  v8::Local<v8::Script> script = Compile(CcTest::isolate(),
+                                         "(function(param) {\n"
+                                         "  (() => { return 2017 })();\n"
+                                         "})()");
+  script->Run(CcTest::isolate()->GetCurrentContext()).ToLocalChecked();
+  CheckFunctionName(script, "return 2017", "");
+}