When the feed query on project profile pages overheats, contain the damage

Summary:
Ref T13349. This is almost the same change as D20678, but for project profiles instead of user profiles.

The general reproduction case is "view a project where you can't see more than 50 of the 500 most recent feed stories".

Test Plan:
  - Forced all queries to overheat.
  - Viewed a project profile page.
  - Before: overheating fatal near top level.
  - After: damage contained to feed panel.

Maniphest Tasks: T13349

Differential Revision: https://secure.phabricator.com/D20704

src/applications/project/controller/PhabricatorProjectProfileController.php

@@ -78,14 +78,29 @@ final class PhabricatorProjectProfileController
       $project,
       PhabricatorProject::ITEM_PROFILE);
 
-    $stories = id(new PhabricatorFeedQuery())
+    $query = id(new PhabricatorFeedQuery())
       ->setViewer($viewer)
-      ->withFilterPHIDs(
-        array(
-          $project->getPHID(),
-        ))
+      ->withFilterPHIDs(array($project->getPHID()))
       ->setLimit(50)
-      ->execute();
+      ->setReturnPartialResultsOnOverheat(true);
+
+    $stories = $query->execute();
+
+    $overheated_view = null;
+    $is_overheated = $query->getIsOverheated();
+    if ($is_overheated) {
+      $overheated_message =
+        PhabricatorApplicationSearchController::newOverheatedError(
+          (bool)$stories);
+
+      $overheated_view = id(new PHUIInfoView())
+        ->setSeverity(PHUIInfoView::SEVERITY_WARNING)
+        ->setTitle(pht('Query Overheated'))
+        ->setErrors(
+          array(
+            $overheated_message,
+          ));
+    }
 
     $view_all = id(new PHUIButtonView())
       ->setTag('a')
@@ -103,7 +118,11 @@ final class PhabricatorProjectProfileController
     $feed = id(new PHUIObjectBoxView())
       ->setHeader($feed_header)
       ->addClass('project-view-feed')
-      ->appendChild($feed);
+      ->appendChild(
+        array(
+          $overheated_view,
+          $feed,
+        ));
 
     require_celerity_resource('project-view-css');