Expose Audit actions for "transaction.search" in a basic way

Summary: Ref T13210. See PHI841. This mirrors D19509 for Differential.

Test Plan: Called `transaction.search` on a commit with a bunch of audit activity, got appropriate labels in the results.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13210

Differential Revision: https://secure.phabricator.com/D19760

src/applications/diffusion/xaction/DiffusionCommitAcceptTransaction.php

@@ -70,4 +70,12 @@ final class DiffusionCommitAcceptTransaction
       $this->renderObject());
   }
 
+  public function getTransactionTypeForConduit($xaction) {
+    return 'accept';
+  }
+
+  public function getFieldValuesForConduit($object, $data) {
+    return array();
+  }
+
 }

src/applications/diffusion/xaction/DiffusionCommitConcernTransaction.php

@@ -76,4 +76,12 @@ final class DiffusionCommitConcernTransaction
       $this->renderObject());
   }
 
+  public function getTransactionTypeForConduit($xaction) {
+    return 'concern';
+  }
+
+  public function getFieldValuesForConduit($object, $data) {
+    return array();
+  }
+
 }

src/applications/diffusion/xaction/DiffusionCommitResignTransaction.php

@@ -63,4 +63,12 @@ final class DiffusionCommitResignTransaction
       $this->renderObject());
   }
 
+  public function getTransactionTypeForConduit($xaction) {
+    return 'resign';
+  }
+
+  public function getFieldValuesForConduit($object, $data) {
+    return array();
+  }
+
 }

src/applications/diffusion/xaction/DiffusionCommitVerifyTransaction.php

@@ -68,4 +68,12 @@ final class DiffusionCommitVerifyTransaction
       $this->renderObject());
   }
 
+  public function getTransactionTypeForConduit($xaction) {
+    return 'request-verification';
+  }
+
+  public function getFieldValuesForConduit($object, $data) {
+    return array();
+  }
+
 }