Implement chrome.bluetoothLowEnergy.resetAdvertising().

extensions/common/api/bluetooth_low_energy.idl

Index: extensions/common/api/bluetooth_low_energy.idl
diff --git a/extensions/common/api/bluetooth_low_energy.idl b/extensions/common/api/bluetooth_low_energy.idl
index f0641f575d892e34f2eed6b7c0dcf3534510d52c..ee6df3d042c7465d22abf044e04ddd2421efea42 100644
--- a/extensions/common/api/bluetooth_low_energy.idl
+++ b/extensions/common/api/bluetooth_low_energy.idl
@@ -470,6 +470,11 @@ namespace bluetoothLowEnergy {
     static void unregisterAdvertisement(long advertisementId,
         ResultCallback callback);
 
+    // Resets advertising on the current device. It will unregister and
+    // stop all existing advertisements.
+    // |callback|: Called once the advertisements are reset.
+    static void resetAdvertising(ResultCallback callback);
+
     // Set's the interval betweeen two consecutive advertisements. Note:
     // This is a best effort. The actual interval may vary non-trivially
     // from the requested intervals. On some hardware, there is a minimum