Move system.* family of APIs to extensions/

extensions/common/api/system_display.idl

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Use the <code>system.display</code> API to query display metadata.
 namespace system.display {
 
   dictionary Bounds {
     // The x-coordinate of the upper-left corner.
     long left;
@@ skipping 130 matching lines @@
         DOMString id,
         DisplayProperties info,
         optional SetDisplayUnitInfoCallback callback);
   };
 
   interface Events {
     // Fired when anything changes to the display configuration.
     static void onDisplayChanged();
   };
 };