Use selected button state on blame button

Summary: Visually selects the button if blame is on.

Test Plan: Turn blame on and off in Diffusion on a file.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D18504

src/applications/diffusion/controller/DiffusionBrowseController.php

@@ -730,6 +730,7 @@ final class DiffusionBrowseController extends DiffusionController {
       ->setText($blame_text)
       ->setIcon($blame_icon)
       ->setUser($viewer)
+      ->setSelected(!$blame_value)
       ->setColor(PHUIButtonView::GREY);
 
     if ($viewer->isLoggedIn()) {