[parser] Follow-up to r50640: add cctest.

This adds a test-preparser cctest corresponding to the regression test added in
https://chromium-review.googlesource.com/865900

BUG=chromium:801772

Change-Id: I33d74e242fd765b91b7c148b9a0af4960a7b05ea
Reviewed-on: https://chromium-review.googlesource.com/870311Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50688}

test/cctest/parsing/test-preparser.cc

@@ -89,6 +89,11 @@ TEST(PreParserScopeAnalysis) {
        "get_method();",
        true, true, false},
 
+      // Corner case: function expression with name "arguments".
+      {"var test = function arguments(%s) { %s function skippable() { } };\n"
+       "test;\n",
+       false, false, false}
+
       // FIXME(marja): Generators and async functions
   };