Added missing include headers
Comment SIMD option, needs rebase.

If we don't comment this, we get an command line not recognized when
running the tests and many of them will fail.
Use ExecuteScript instead of ExecuteJavascriptInWebFrame

ExecuteJavascriptInWebFrame was deprecated upstream and ExecuteScript pretty
much does the same thing in our use case.
Merge pull request #1953 from tmpsantos/next

Fixes for the next branch