Improve Firefox importer to handle all Firefox profiles.

chrome/common/importer/mock_importer_bridge.cc

Index: chrome/common/importer/mock_importer_bridge.cc
diff --git a/device/bluetooth/public/interfaces/bluetooth_uuid.mojom b/chrome/common/importer/mock_importer_bridge.cc
similarity index 62%
copy from device/bluetooth/public/interfaces/bluetooth_uuid.mojom
copy to chrome/common/importer/mock_importer_bridge.cc
index 94ac31fcf3a8961333938e9204a6ff5901769e21..a272650b3e91e5cf3012a7a73c9bf7ca8d45345c 100644
--- a/device/bluetooth/public/interfaces/bluetooth_uuid.mojom
+++ b/chrome/common/importer/mock_importer_bridge.cc
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module device.mojom;
+#include "chrome/common/importer/mock_importer_bridge.h"
 
-struct BluetoothUUID {
-  string uuid;
-};
+MockImporterBridge::~MockImporterBridge() {}