Make URLDataSource::GetSource() const.

Make URLDataSource::GetSource() const.

The method is logically const, all callers are already const, and I
wanted to call this from a const method.

BUG=

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=194605

[Jered, 2013-04-16 18:51:01]

sky, can you take a look at this const cleanup which touches a lot of
directories, or should I farm this out to local OWNERs? Thanks.

[sky, 2013-04-16 19:43:50]

I recommend getting an owner of content/public/browser and then TBRing
the bulk of this. If there are non-trivial changes (meaning something
more than adding const or if you need a const-cast) then get a local
OWNER.

On Tue, Apr 16, 2013 at 11:51 AM,  <jered@chromium.org> wrote:
> sky, can you take a look at this const cleanup which touches a lot of
> directories, or should I farm this out to local OWNERs? Thanks.
>
> https://codereview.chromium.org/13945023/

[Jered, 2013-04-17 00:21:18]

I realized +jam should be on this since const is an api change technically.

[Jered, 2013-04-17 00:22:15]

On 2013/04/16 19:43:50, sky wrote:
> I recommend getting an owner of content/public/browser and then TBRing
> the bulk of this. If there are non-trivial changes (meaning something
> more than adding const or if you need a const-cast) then get a local
> OWNER.
Ok, thanks for the advice, will get api checked out then TBR.

> 
> On Tue, Apr 16, 2013 at 11:51 AM,  <mailto:jered@chromium.org> wrote:
> > sky, can you take a look at this const cleanup which touches a lot of
> > directories, or should I farm this out to local OWNERs? Thanks.
> >
> > https://codereview.chromium.org/13945023/

[jam, 2013-04-17 00:48:30]

lgtm

[Jered, 2013-04-17 16:15:46]

Committed patchset #3 manually as r194605 (presubmit successful).