Add a function that calculates the size of WebSocket frame header.

This function will be used to determine the size of buffer needed for
writing WebSocket frame header.

BUG=116624
R=mmenke@chromium.org


Review URL: https://chromiumcodereview.appspot.com/10825444

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152518 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed