Remove is_prerender() from ChromeURLRequestUserData since it's not used anymore.

Remove is_prerender() from ChromeURLRequestUserData since it's not used anymore.

Also remove ChromeURLRequestUserData since no one else is using it.

BUG=304341
R=davidben@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=243366

[davidben, 2014-01-06 22:45:49]

LGTM, although do we want to just punt ChromeURLRequestUserData altogether now?
I don't see anywhere else it was used.

[jam, 2014-01-06 22:53:50]

On 2014/01/06 22:45:49, David Benjamin wrote:
> LGTM, although do we want to just punt ChromeURLRequestUserData altogether
now?
> I don't see anywhere else it was used.

it's not used anywhere else. I didn't feel strongly one way or another whether
to leave it or not. The tradeoff is that someone who wants to add extra data on
the chrome side and attach it to a URLRequest. But, I guess if since it got
added no one else needed to use it other than for prerendering, that's a good
sign that people don't need this. I'll remove it, thanks.

[davidben, 2014-01-06 23:01:34]

LGTM.