Don't query a null AccessibiiltyNodeInfo when populating ViewStructure

Chrome may crash with an NPE

Bug: 193839657
Test: builds
Change-Id: I106bdf80678f9edd6fbd5193d3a79a48c95a1d7a

core/java/android/view/View.java

@@ -10079,9 +10079,11 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
                 }
                 AccessibilityNodeInfo cinfo = provider.createAccessibilityNodeInfo(
                         AccessibilityNodeInfo.getVirtualDescendantId(info.getChildId(i)));
-                ViewStructure child = structure.newChild(i);
-                populateVirtualStructure(child, provider, cinfo, forAutofill);
-                cinfo.recycle();
+                if (cinfo != null) {
+                    ViewStructure child = structure.newChild(i);
+                    populateVirtualStructure(child, provider, cinfo, forAutofill);
+                    cinfo.recycle();
+                }
             }
         }
     }