Move some component's GN build files to main tree.

Move some component's GN build files to main tree.

This moves the files from the shadow tree and updates shared_library -> source_set.

This also hooks up //url to the build (the file was already in the right place)

BUG=
R=blundell@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=261140

[blundell, 2014-04-02 08:15:48]

LGTM

Is there documentation somewhere of gn's syntax/semantics, since now people be
maintaining gn files?

[brettw, 2014-04-02 16:46:45]

On 2014/04/02 08:15:48, blundell wrote:
> LGTM
> 
> Is there documentation somewhere of gn's syntax/semantics, since now people be
> maintaining gn files?

Yes!

https://code.google.com/p/chromium/wiki/GNCookbook

[brettw, 2014-04-02 17:08:19]

Committed patchset #1 manually as r261140 (presubmit successful).

[blundell, 2014-04-02 19:28:52]

On 2014/04/02 16:46:45, brettw wrote:
> On 2014/04/02 08:15:48, blundell wrote:
> > LGTM
> > 
> > Is there documentation somewhere of gn's syntax/semantics, since now people
be
> > maintaining gn files?
> 
> Yes!
> 
> https://code.google.com/p/chromium/wiki/GNCookbook

Nice!