[EasyUnlock] Add a private API for establishing an insecure Bluetooth connection.

chrome/common/extensions/api/easy_unlock_private.idl

Index: chrome/common/extensions/api/easy_unlock_private.idl
diff --git a/chrome/common/extensions/api/easy_unlock_private.idl b/chrome/common/extensions/api/easy_unlock_private.idl
index 1648853257bfe8f14e563310b27b8da1a45a652b..731e5bbb231db37c8d4ee7ff42291f82617b843c 100644
--- a/chrome/common/extensions/api/easy_unlock_private.idl
+++ b/chrome/common/extensions/api/easy_unlock_private.idl
@@ -214,6 +214,20 @@
     static void seekBluetoothDeviceByAddress(DOMString deviceAddress,
                                              optional EmptyCallback callback);
 
+    // Connects the socket to a remote Bluetooth device over an insecure
+    // connection, i.e. a connection that requests no bonding. Other than the

[Tim Song, 2014/08/21 00:36:27]

also mention "no MITM protection" as it's possible to request No Bonding, but
also require MITM protection (Android actually does this).

[Ilya Sherman, 2014/08/21 00:53:24]

Done.

+    // reduced security setting, behaves identically to the
+    // chrome.bluetoothSocket.connect() function.
+    // |socketId| : The socket identifier, as issued by the
+    //     chrome.bluetoothSocket API.
+    // |address| : The address of the Bluetooth device.
+    // |uuid| : The UUID of the service to connect to.
+    // |callback| : Called when the connect attempt is complete.
+    static void connectToBluetoothServiceInsecurely(long socketId,
+                                                    DOMString address,
+                                                    DOMString uuid,
+                                                    EmptyCallback callback);
+
     // Updates the screenlock state to reflect the Easy Unlock app state.
     static void updateScreenlockState(State state,
                                       optional EmptyCallback callback);