Lasse R.H. Nielsen
dd561d513b
Allows checking the scheme of a URI against a known value.
Example: `uri.isScheme("http")`.
Has two advantages over `uri.scheme == "http"`:
* It's case insensitive, so you can do `uri.isScheme("HTTP")` as well, and
* for simple URIs, it doesn't need to allocate a new string.
R=floitsch@google.com
Review-Url: https://codereview.chromium.org/2664453003 .