[MD settings] merge polymer 1.0.11; hack for settings checkbox

third_party/polymer/v1_0/components-chromium/iron-overlay-behavior/iron-overlay-manager-extracted.js

-
+Polymer.IronOverlayManager = (function() {
 
-  Polymer.IronOverlayManager = (function() {
-
     var overlays = [];
     var DEFAULT_Z = 10;
     var backdrops = [];
 
     // track overlays for z-index and focus managemant
     function addOverlay(overlay) {
       var z0 = currentOverlayZ();
       overlays.push(overlay);
       var z1 = currentOverlayZ();
       if (z1 <= z0) {
@@ skipping 68 matching lines @@
     return {
       addOverlay: addOverlay,
       removeOverlay: removeOverlay,
       currentOverlay: currentOverlay,
       currentOverlayZ: currentOverlayZ,
       focusOverlay: focusOverlay,
       trackBackdrop: trackBackdrop,
       getBackdrops: getBackdrops
     };
 
-  })();
-
+  })();