Revert of Revert of CSP: Convert CSPSource constructor bools into a enum.

Revert of Revert of CSP: Convert CSPSource constructor bools into a enum. (patchset #1 id:1 of https://codereview.chromium.org/565723002/)

Reason for revert:
Not a culprit.

Original issue's description:
> Revert of CSP: Convert CSPSource constructor bools into a enum. (patchset #1 id:1 of https://codereview.chromium.org/568433002/)
> 
> Reason for revert:
> Your patch broke quite a number of webkit tests:
> http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.8%20%28retina%29/builds/19050
> http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.7/builds/31462
> 
> Original issue's description:
> > CSP: Convert CSPSource constructor bools into a enum.
> > 
> > Rather than passing the wildcard disposition of CSPSource's hosts and ports
> > as booleans, we should have an enum that allows us to figure out hat we
> > mean at the callsite. This patch adds CSPSource::WildcardDisposition in
> > order to make this clear.
> > 
> > Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181821
> 
> TBR=jochen@chromium.org,mkwst@chromium.org
> NOTREECHECKS=true
> NOTRY=true
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181833

TBR=jochen@chromium.org,mkwst@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181838

[jianli, 2014-09-11 18:49:12]

Created Revert of Revert of CSP: Convert CSPSource constructor bools into a
enum.

[commit-bot: I haz the power, 2014-09-11 18:50:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/563863002/1

[commit-bot: I haz the power, 2014-09-11 18:50:45]

Committed patchset #1 (id:1) as 181838