Show only recent open revisions affecting the same files

Summary: Fixes T5658. Over a long period of time, some cruft can build up here. Only show revisions which have been updated in the last 30 days.

Test Plan:
  - Viewed panel in Differential and Diffusion.
  - Changed limit from 30 days to 30 seconds and saw no revisions.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5658

Differential Revision: https://secure.phabricator.com/D12158

src/applications/differential/controller/DifferentialRevisionViewController.php

@@ -780,9 +780,12 @@ final class DifferentialRevisionViewController extends DifferentialController {
       return array();
     }
 
+    $recent = (PhabricatorTime::getNow() - phutil_units('30 days in seconds'));
+
     $query = id(new DifferentialRevisionQuery())
       ->setViewer($this->getRequest()->getUser())
       ->withStatus(DifferentialRevisionQuery::STATUS_OPEN)
+      ->withUpdatedEpochBetween($recent, null)
       ->setOrder(DifferentialRevisionQuery::ORDER_PATH_MODIFIED)
       ->setLimit(10)
       ->needFlags(true)
@@ -807,13 +810,17 @@ final class DifferentialRevisionViewController extends DifferentialController {
 
   private function renderOtherRevisions(array $revisions) {
     assert_instances_of($revisions, 'DifferentialRevision');
+    $viewer = $this->getViewer();
 
-    $user = $this->getRequest()->getUser();
+    $header = id(new PHUIHeaderView())
+      ->setHeader(pht('Similar Open Revisions'))
+      ->setSubheader(
+        pht('Recently updated open revisions affecting the same files.'));
 
     $view = id(new DifferentialRevisionListView())
-      ->setHeader(pht('Open Revisions Affecting These Files'))
+      ->setHeader($header)
       ->setRevisions($revisions)
-      ->setUser($user);
+      ->setUser($viewer);
 
     $phids = $view->getRequiredHandlePHIDs();
     $handles = $this->loadViewerHandles($phids);