DevTools: Don't let the suggestbox overflow its bounds

third_party/WebKit/Source/devtools/front_end/ui/SuggestBox.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 117 matching lines @@
 
         this._overlay.setLeftOffset(anchorBox.x);
 
         var under = underHeight >= aboveHeight;
         if (under)
             this._overlay.setVerticalOffset(anchorBox.y + anchorBox.height, true);
         else
             this._overlay.setVerticalOffset(totalHeight - anchorBox.y, false);
 
         var spacer = 6;
-        var maxHeight = this._maxItemsHeight ? this._maxItemsHeight * this._rowHeight : Math.max(underHeight, aboveHeight) - spacer;
+        var maxHeight = Math.min(Math.max(underHeight, aboveHeight) - spacer, this._maxItemsHeight ? this._maxItemsHeight * this._rowHeight : 0);
         var height = this._rowHeight * this._items.length;
         this._hasVerticalScroll = height > maxHeight;
         this._element.style.height = Math.min(maxHeight, height) + "px";
     },
 
     _updateWidth: function()
     {
         if (this._hasVerticalScroll) {
             this._element.style.width = "100vw";
             return;
@@ skipping 454 matching lines @@
         this.element.style.top = containerBox.y + "px";
         this.element.style.height = containerBox.height + "px";
         this.element.style.width = containerBox.width + "px";
     },
 
     dispose: function()
     {
         this.element.remove();
     }
 };