Extensions: Move bluetooth APIs to extensions/.

extensions/common/api/bluetooth_low_energy.idl

 // Copyright 2014 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.
 
 // The <code>chrome.bluetoothLowEnergy</code> API is used to communicate with
 // Bluetooth Smart (Low Energy) devices using the
 // <a href="https://developer.bluetooth.org/TechnologyOverview/Pages/GATT.aspx">
 // Generic Attribute Profile (GATT)</a>.
 namespace bluetoothLowEnergy {
   // Values representing the possible properties of a characteristic.
@@ skipping 279 matching lines @@
 
     // Fired when the value of a remote GATT characteristic descriptor changes,
     // usually as a result of a read request. This event exists
     // mostly for convenience and will always be sent after a successful
     // call to $(ref:readDescriptorValue).
     // |descriptor| : The GATT characteristic descriptor whose value has
     // changed.
     static void onDescriptorValueChanged(Descriptor descriptor);
   };
 };