trust is stored in code_cell.metadata

not top-level code_cell

IPython/html/services/contents/tests/test_manager.py

@@ -311,13 +311,13 @@ class TestContentsManager(TestCase):
         cm.mark_trusted_cells(nb, name, path)
         for cell in nb.worksheets[0].cells:
             if cell.cell_type == 'code':
-                assert not cell.trusted
+                assert not cell.metadata.trusted
 
         cm.trust_notebook(name, path)
         nb = cm.get_model(name, path)['content']
         for cell in nb.worksheets[0].cells:
             if cell.cell_type == 'code':
-                assert cell.trusted
+                assert cell.metadata.trusted
 
     def test_check_and_sign(self):
         cm = self.contents_manager

IPython/html/static/notebook/js/codecell.js

@@ -472,7 +472,7 @@ define([
             } else {
                 this.set_input_prompt();
             }
-            this.output_area.trusted = data.trusted || false;
+            this.output_area.trusted = data.metadata.trusted || false;
             this.output_area.fromJSON(data.outputs);
             if (data.collapsed !== undefined) {
                 if (data.collapsed) {
@@ -495,8 +495,8 @@ define([
         var outputs = this.output_area.toJSON();
         data.outputs = outputs;
         data.language = 'python';
-        data.trusted = this.output_area.trusted;
-        data.collapsed = this.collapsed;
+        data.metadata.trusted = this.output_area.trusted;
+        data.collapsed = this.output_area.collapsed;
         return data;
     };