This extends the wasm test case which only checks the "simple"
string-variant of the stack trace.
It checks the return values of the getFunctionName, getLineNumber,
getFileName and toString methods.

R=machenbach@chromium.org, jfb@chromium.org, titzer@chromium.org

Review URL: https://codereview.chromium.org/1875153002

Cr-Commit-Position: refs/heads/master@{#35687}