Simplify policy header implementation

Summary: Instead of rendering this in all callers, just pass the object into the header and let it figure out how to format it.

Test Plan: Looked at Legalpad, Paste, and Pholio.

Reviewers: chad, btrahan

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D7039

src/applications/pholio/controller/PholioMockViewController.php

@@ -67,15 +67,10 @@ final class PholioMockViewController extends PholioController {
 
     $title = $mock->getName();
 
-    $descriptions = PhabricatorPolicyQuery::renderPolicyDescriptions(
-      $user,
-      $mock,
-      $icon = true);
-
     $header = id(new PHUIHeaderView())
       ->setHeader($title)
-      ->addProperty(PHUIHeaderView::PROPERTY_POLICY,
-        $descriptions[PhabricatorPolicyCapability::CAN_VIEW]);
+      ->setUser($user)
+      ->setPolicyObject($mock);
 
     $actions = $this->buildActionView($mock);
     $properties = $this->buildPropertyView($mock, $engine);