gdata: Apply correct mount label when mounting archives in GData

chrome/browser/chromeos/disks/mock_disk_mount_manager.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_DISKS_MOCK_DISK_MOUNT_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_DISKS_MOCK_DISK_MOUNT_MANAGER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 12 matching lines @@
   virtual ~MockDiskMountManager();
 
   // DiskMountManager override.
   MOCK_METHOD0(Init, void(void));
   MOCK_METHOD1(AddObserver, void(DiskMountManager::Observer*));
   MOCK_METHOD1(RemoveObserver, void(DiskMountManager::Observer*));
   MOCK_CONST_METHOD0(disks, const DiskMountManager::DiskMap&(void));
   MOCK_CONST_METHOD0(mount_points,
                      const DiskMountManager::MountPointMap&(void));
   MOCK_METHOD0(RequestMountInfoRefresh, void(void));
-  MOCK_METHOD3(MountPath, void(const std::string&, const std::string&,
-                               MountType));
+  MOCK_METHOD4(MountPath, void(const std::string&, const std::string&,
+                               const std::string&, MountType));
   MOCK_METHOD1(UnmountPath, void(const std::string&));
   MOCK_METHOD3(GetSizeStatsOnFileThread, void(const std::string&, size_t*,
                                               size_t*));
   MOCK_METHOD1(FormatUnmountedDevice, void(const std::string&));
   MOCK_METHOD1(FormatMountedDevice, void(const std::string&));
   MOCK_METHOD3(UnmountDeviceRecursive, void(const std::string&,
       DiskMountManager::UnmountDeviceRecursiveCallbackType, void*));
 
   // Invokes fake device insert events.
   void NotifyDeviceInsertEvents();
@@ skipping 28 matching lines @@
   // The list of disks found.
   DiskMountManager::DiskMap disks_;
 
   DISALLOW_COPY_AND_ASSIGN(MockDiskMountManager);
 };
 
 }  // namespace disks
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_DISKS_MOCK_DISK_MOUNT_MANAGER_H_