Mostly make blame work with DocumentEngine

Summary: Ref T13105. This needs refinement but blame sort of works again, now.

Test Plan: Viewed files in Diffusion and Files; saw blame in Diffusion when viewing in source mode.

Reviewers: mydeveloperday

Reviewed By: mydeveloperday

Maniphest Tasks: T13105

Differential Revision: https://secure.phabricator.com/D19309

src/applications/diffusion/application/PhabricatorDiffusionApplication.php

@@ -55,6 +55,8 @@ final class PhabricatorDiffusionApplication extends PhabricatorApplication {
         'browse/(?P<dblob>.*)' => 'DiffusionBrowseController',
         'document/(?P<dblob>.*)'
           => 'DiffusionDocumentController',
+        'blame/(?P<dblob>.*)'
+          => 'DiffusionBlameController',
         'lastmodified/(?P<dblob>.*)' => 'DiffusionLastModifiedController',
         'diff/' => 'DiffusionDiffController',
         'tags/(?P<dblob>.*)' => 'DiffusionTagListController',