Make drag-and-drop to upload files work on any Home dashboard, not just "Magic Home"

Summary: Ref T12174. Drag-and-drop-to-upload requires some stuff in the document. Put that stuff on all the content pages (currently: dashboards, magic home), not just the builtin home.

Test Plan:
  - Dragged-and-dropped onto a Home dashbboard to upload.
  - Viewed, and dragged-and-dropped onto "builtin home" to upload.
  - Dragged onto "Edit Menu" for home, no upload.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T12174

Differential Revision: https://secure.phabricator.com/D17307

src/applications/home/engine/PhabricatorHomeProfileMenuEngine.php

@@ -11,6 +11,24 @@ final class PhabricatorHomeProfileMenuEngine
     return "/home/menu/{$path}";
   }
 
+  protected function buildItemViewContent(
+    PhabricatorProfileMenuItemConfiguration $item) {
+    $viewer = $this->getViewer();
+
+    // Add content to the document so that you can drag-and-drop files onto
+    // the home page or any home dashboard to upload them.
+
+    $upload = id(new PhabricatorGlobalUploadTargetView())
+      ->setUser($viewer);
+
+    $content = parent::buildItemViewContent($item);
+
+    return array(
+      $content,
+      $upload,
+    );
+  }
+
   protected function getBuiltinProfileItems($object) {
     $viewer = $this->getViewer();
     $items = array();

src/applications/home/view/PHUIHomeView.php

@@ -12,15 +12,6 @@ final class PHUIHomeView
   }
 
   protected function getTagContent() {
-    $viewer = $this->getViewer();
-
-    return array(
-      $this->buildMainResponse(),
-      id(new PhabricatorGlobalUploadTargetView())->setUser($viewer),
-    );
-  }
-
-  private function buildMainResponse() {
     require_celerity_resource('phabricator-dashboard-css');
     $viewer = $this->getViewer();
 

src/applications/search/engine/PhabricatorProfileMenuEngine.php

@@ -685,7 +685,7 @@ abstract class PhabricatorProfileMenuEngine extends Phobject {
       ->setURI($this->getConfigureURI());
   }
 
-  private function buildItemViewContent(
+  protected function buildItemViewContent(
     PhabricatorProfileMenuItemConfiguration $item) {
     return $item->newPageContent();
   }