Update Phabricator for split syntax highlighting API

Summary: I'll clean some of this stuff up in a followup too, but update the
callers to use the new explicit filename-based API.
Test Plan: Looked at paste, Diffusion and Differential.
Reviewed By: tuomaspelkonen
Reviewers: tuomaspelkonen, codeblock, jungejason, aran
CC: aran, tuomaspelkonen
Differential Revision: 600

src/applications/diffusion/controller/file/DiffusionBrowseFileController.php

@@ -179,13 +179,16 @@ class DiffusionBrowseFileController extends DiffusionController {
 
         list($text_list, $rev_list, $blame_dict) = $file_query->getBlameData();
 
-        $highlightEngine = new PhutilDefaultSyntaxHighlighterEngine();
-        $highlightEngine->setConfig(
+        $highlight_engine = new PhutilDefaultSyntaxHighlighterEngine();
+        $highlight_engine->setConfig(
           'pygments.enabled',
           PhabricatorEnv::getEnvConfig('pygments.enabled'));
 
-        $text_list = explode("\n", $highlightEngine->highlightSource($path,
-          implode("\n", $text_list)));
+        $text_list = explode(
+          "\n",
+          $highlight_engine->highlightSource(
+            $highlight_engine->getLanguageFromFilename($path),
+            implode("\n", $text_list)));
 
         $rows = $this->buildDisplayRows($text_list, $rev_list, $blame_dict,
           $needs_blame, $drequest, $file_query, $selected);