WebSocketBasicStream should ignore empty buffer

If an empty read buffer is passed to the WebSocketBasicStream
constructor, it should disregard it. Make it so.

Review URL: https://codereview.chromium.org/63573003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233605 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed