Fix Diffusion blame columns when disabling blame

Summary:
Fixes T10385. Two issues:

  - `$show_blame` and `$show_color` were improperly swapped.
  - Code to hide these columns got dropped somewhere, probably in my recent-ish rewrite.

Test Plan:
  - Showed/hid blame.
  - Showed/hid colors.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10385

Differential Revision: https://secure.phabricator.com/D15528

src/applications/diffusion/controller/DiffusionBrowseController.php

@@ -995,8 +995,8 @@ final class DiffusionBrowseController extends DiffusionController {
     array $lines,
     array $blame_list,
     array $blame_commits,
-    $show_color,
+    $show_blame,
-    $show_blame) {
+    $show_color) {
 
     $request = $this->getRequest();
     $viewer = $this->getViewer();
@@ -1233,27 +1233,29 @@ final class DiffusionBrowseController extends DiffusionController {
           "\xC2\xAB");
       }
 
-      $row[] = phutil_tag(
+      if ($show_blame) {
-        'th',
+        $row[] = phutil_tag(
-        array(
+          'th',
-          'class' => 'diffusion-blame-link',
+          array(
-        ),
+            'class' => 'diffusion-blame-link',
-        $before_link);
+          ),
+          $before_link);
 
-      $object_links = array();
+        $object_links = array();
-      $object_links[] = $commit_link;
+        $object_links[] = $commit_link;
-      if ($revision_link) {
+        if ($revision_link) {
-        $object_links[] = phutil_tag('span', array(), '/');
+          $object_links[] = phutil_tag('span', array(), '/');
-        $object_links[] = $revision_link;
+          $object_links[] = $revision_link;
+        }
+
+        $row[] = phutil_tag(
+          'th',
+          array(
+            'class' => 'diffusion-rev-link',
+          ),
+          $object_links);
       }
 
-      $row[] = phutil_tag(
-        'th',
-        array(
-          'class' => 'diffusion-rev-link',
-        ),
-        $object_links);
-
       $line_link = phutil_tag(
         'a',
         array(