[Benchmark] Transfer speed and file_get_contents

Hi,
in benchmarkClass.php (function bench_networkspeed)
how about using wp_remote_get function instead of file_get_contents?

do
{
	$tmp=wp_remote_get('https://ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.js');.
	$data.=$tmp["body"];
	$count++;
}
while ($count<5);

In this way you can avoid the allow_url_fopen problem.

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