Add neutral as a SecurityState in the Security domain. (1/4)

Add neutral as a SecurityState in the Security domain.

In light of marking passive mixed content as neutral, "neutral" is by far a better name.

BUG=522274
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=200787

[lgarron, 2015-08-18 22:31:40]

lgarron@chromium.org changed reviewers:
+ pfeldman@chromium.org

[lgarron, 2015-08-18 22:31:41]

Pavel, would you mind reviewing this multi-step patch? (This is #1.)

1. https://codereview.chromium.org/1301823003 Add neutral as a SecurityState in
the Security domain. (Blink)
2. https://codereview.chromium.org/1289203009 Switch InspectorResourceAgent to
use Neutral instead of Http for SecurityState. (Blink)
3. https://codereview.chromium.org/1301833002 Switch security handler to use
"neutral" security state instead of "http". (Chrome)
4. https://codereview.chromium.org/1291543005
https://codereview.chromium.org/1291543005 (Blink)

(#2 and #3 can be done in parallel.)

[pfeldman, 2015-08-18 23:49:20]

lgtm

[lgarron, 2015-08-19 00:15:08]

The CQ bit was checked by lgarron@chromium.org

[commit-bot: I haz the power, 2015-08-19 00:15:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1301823003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1301823003/1

[commit-bot: I haz the power, 2015-08-19 03:10:48]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=200787