Return Drive mount point by getMountPoints.

chrome/browser/chromeos/extensions/file_manager/file_browser_private_apitest.cc

 // 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.
 
 #include "base/stl_util.h"
+#include "chrome/browser/chromeos/file_manager/drive_test_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chromeos/dbus/cros_disks_client.h"
 #include "chromeos/disks/mock_disk_mount_manager.h"
 
 using ::testing::_;
 using ::testing::ReturnRef;
 
 using chromeos::disks::DiskMountManager;
 
 namespace {
@@ skipping 211 matching lines @@
     return (volume_it == volumes_.end()) ? NULL : volume_it->second;
   }
 
  protected:
   chromeos::disks::MockDiskMountManager* disk_mount_manager_mock_;
   DiskMountManager::DiskMap volumes_;
   DiskMountManager::MountPointMap mount_points_;
 };
 
 IN_PROC_BROWSER_TEST_F(FileBrowserPrivateApiTest, Mount) {
+  file_manager::test_util::WaitUntilDriveMountPointIsAdded(
+      browser()->profile());
+
   // We will call fileBrowserPrivate.unmountVolume once. To test that method, we
   // check that UnmountPath is really called with the same value.
   EXPECT_CALL(*disk_mount_manager_mock_, UnmountPath(_, _,  _))
       .Times(0);
   EXPECT_CALL(*disk_mount_manager_mock_,
               UnmountPath(
                   chromeos::CrosDisksClient::GetArchiveMountPoint().AppendASCII(
                       "archive_mount_path").AsUTF8Unsafe(),
                   chromeos::UNMOUNT_OPTIONS_NONE, _)).Times(1);
 
   EXPECT_CALL(*disk_mount_manager_mock_, disks())
       .WillRepeatedly(ReturnRef(volumes_));
 
   EXPECT_CALL(*disk_mount_manager_mock_, mount_points())
       .WillRepeatedly(ReturnRef(mount_points_));
 
   ASSERT_TRUE(RunComponentExtensionTest("file_browser/mount_test"))
       << message_;
 }