Fix missing willUpload hook for drag-and-drop chunked upload

Summary:
Ref T9324. When you upload a normal file, we call `willUpload` and then `didUpload`.

When you upload a chunked file, we never call `willUpload`. This can get things out of sync. Make sure we invoke this event for both chunked and non-chunked uploads.

Test Plan: Got cleaner behavior (redirect after all uploads finish) in new Phacility file upload area.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9324

Differential Revision: https://secure.phabricator.com/D14083

resources/celerity/map.php

@@ -11,7 +11,7 @@ return array(
     'core.pkg.js' => '47dc9ebb',
     'darkconsole.pkg.js' => 'e7393ebb',
     'differential.pkg.css' => '2de124c9',
-    'differential.pkg.js' => '813c1633',
+    'differential.pkg.js' => '52d725be',
     'diffusion.pkg.css' => '385e85b3',
     'diffusion.pkg.js' => '0115b37c',
     'maniphest.pkg.css' => '4845691a',
@@ -429,7 +429,7 @@ return array(
     'rsrc/js/application/uiexample/gesture-example.js' => '558829c2',
     'rsrc/js/application/uiexample/notification-example.js' => '8ce821c5',
     'rsrc/js/core/Busy.js' => '59a7976a',
-    'rsrc/js/core/DragAndDropFileUpload.js' => '07de8873',
+    'rsrc/js/core/DragAndDropFileUpload.js' => 'ad10aeac',
     'rsrc/js/core/DraggableList.js' => 'a16ec1c6',
     'rsrc/js/core/FileUpload.js' => '477359c8',
     'rsrc/js/core/Hovercard.js' => '14ac66f5',
@@ -718,7 +718,7 @@ return array(
     'phabricator-core-css' => 'a76cefc9',
     'phabricator-countdown-css' => 'e7544472',
     'phabricator-dashboard-css' => 'eb458607',
-    'phabricator-drag-and-drop-file-upload' => '07de8873',
+    'phabricator-drag-and-drop-file-upload' => 'ad10aeac',
     'phabricator-draggable-list' => 'a16ec1c6',
     'phabricator-fatal-config-template-css' => '8e6c6fcd',
     'phabricator-feed-css' => 'ecd4ec57',
@@ -885,14 +885,6 @@ return array(
       'javelin-stratcom',
       'javelin-workflow',
     ),
-    '07de8873' => array(
-      'javelin-install',
-      'javelin-util',
-      'javelin-request',
-      'javelin-dom',
-      'javelin-uri',
-      'phabricator-file-upload',
-    ),
     '087e919c' => array(
       'javelin-install',
       'javelin-dom',
@@ -1658,6 +1650,14 @@ return array(
       'javelin-stratcom',
       'javelin-install',
     ),
+    'ad10aeac' => array(
+      'javelin-install',
+      'javelin-util',
+      'javelin-request',
+      'javelin-dom',
+      'javelin-uri',
+      'phabricator-file-upload',
+    ),
     'b064af76' => array(
       'javelin-behavior',
       'javelin-stratcom',

webroot/rsrc/js/core/DragAndDropFileUpload.js

@@ -230,6 +230,8 @@ JX.install('PhabricatorDragAndDropFileUpload', {
         .setStatus('allocate')
         .update();
 
+      this.invoke('willUpload', file);
+
       var alloc_uri = this._getUploadURI(file)
         .setQueryParam('allocate', 1);