[WebUI] ClosureCompile cr.ui.DragWrapper, create a real handler class

chrome/browser/resources/extensions/compiled_resources2.gyp

Index: chrome/browser/resources/extensions/compiled_resources2.gyp
diff --git a/chrome/browser/resources/extensions/compiled_resources2.gyp b/chrome/browser/resources/extensions/compiled_resources2.gyp
index c7956d781ce4ebb947071391b54c10a0de99a293..248d1e3a22e2f6886faa91d39a49dfcc17b84fcb 100644
--- a/chrome/browser/resources/extensions/compiled_resources2.gyp
+++ b/chrome/browser/resources/extensions/compiled_resources2.gyp
@@ -11,5 +11,14 @@
       ],
       'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
     },
+    {
+      'target_name': 'drag_and_drop_handler',
+      'dependencies': [
+        '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:assert',
+        '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:cr',
+        '<(DEPTH)/ui/webui/resources/js/cr/ui/compiled_resources2.gyp:drag_wrapper',
+      ],
+      'includes': ['../../../../third_party/closure_compiler/compile_js2.gypi'],
+    },
   ]
 }