Remove implicit conversions from scoped_refptr to T* in device/

device/bluetooth/bluetooth_socket_mac.mm

Index: device/bluetooth/bluetooth_socket_mac.mm
diff --git a/device/bluetooth/bluetooth_socket_mac.mm b/device/bluetooth/bluetooth_socket_mac.mm
index 02bd3eab941c91a2a6caf0221010c97cf2e94d7a..73f210aba4be4f4488a2107f84913e5eb3bc635e 100644
--- a/device/bluetooth/bluetooth_socket_mac.mm
+++ b/device/bluetooth/bluetooth_socket_mac.mm
@@ -762,7 +762,7 @@ void BluetoothSocketMac::Send(scoped_refptr<net::IOBuffer> buffer,
   // multiple write operations if buffer_size > mtu.
   uint16_t mtu = channel_->GetOutgoingMTU();
   scoped_refptr<net::DrainableIOBuffer> send_buffer(
-      new net::DrainableIOBuffer(buffer, buffer_size));
+      new net::DrainableIOBuffer(buffer.get(), buffer_size));
   while (send_buffer->BytesRemaining() > 0) {
     int byte_count = send_buffer->BytesRemaining();
     if (byte_count > mtu)