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 b35cd98806b395692e767ed46966a6ebf90fd36d..129edb20cedae506daa3ec87a5ab254e4ea52318 100644
--- a/extensions/common/api/bluetooth_low_energy.idl
+++ b/extensions/common/api/bluetooth_low_energy.idl
@@ -464,6 +464,11 @@ namespace bluetoothLowEnergy {
     static void unregisterAdvertisement(long advertisementId,
         ResultCallback callback);
 
+    // Resets advertising on the current device. This will unregister all
+    // existing advertisements and will stop advertising them.
+    // |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