Use TransactionEditor in differential.createcomment

Summary: Ref T2222. Update this callsite; pretty straightforward.

Test Plan: Used Conduit to take actions and saw their effects in Differential.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2222

Differential Revision: https://secure.phabricator.com/D8442

src/applications/differential/controller/DifferentialCommentSaveController.php

@@ -87,17 +87,9 @@ final class DifferentialCommentSaveController
         ->setNewValue(array('+' => $reviewer_edges));
     }
 
-    $inline_phids = $this->loadUnsubmittedInlinePHIDs($revision);
-    if ($inline_phids) {
-      $inlines = id(new PhabricatorApplicationTransactionCommentQuery())
-        ->setTemplate(new DifferentialTransactionComment())
-        ->setViewer($viewer)
-        ->withPHIDs($inline_phids)
-        ->execute();
-    } else {
-      $inlines = array();
-    }
-
+    $inlines = DifferentialTransactionQuery::loadUnsubmittedInlineComments(
+      $viewer,
+      $revision);
     foreach ($inlines as $inline) {
       $xactions[] = id(new DifferentialTransaction())
         ->setTransactionType($type_inline)
@@ -153,30 +145,4 @@ final class DifferentialCommentSaveController
       ->setURI('/D'.$revision->getID());
   }
 
-
-  private function loadUnsubmittedInlinePHIDs(DifferentialRevision $revision) {
-    $viewer = $this->getRequest()->getUser();
-
-    // TODO: This probably needs to move somewhere more central as we move
-    // away from DifferentialInlineCommentQuery, but
-    // PhabricatorApplicationTransactionCommentQuery is currently `final` and
-    // I'm not yet decided on how to approach that. For now, just get the PHIDs
-    // and then execute a PHID-based query through the standard stack.
-
-    $table = new DifferentialTransactionComment();
-    $conn_r = $table->establishConnection('r');
-
-    $phids = queryfx_all(
-      $conn_r,
-      'SELECT phid FROM %T
-        WHERE revisionPHID = %s
-          AND authorPHID = %s
-          AND transactionPHID IS NULL',
-      $table->getTableName(),
-      $revision->getPHID(),
-      $viewer->getPHID());
-
-    return ipull($phids, 'phid');
-  }
-
 }