Destroy MediaFileSystemRegistry before StorageMonitor in MTPDeviceDelegateImplWinTest.

chrome/browser/media_galleries/win/mtp_device_delegate_impl_win_unittest.cc

Index: chrome/browser/media_galleries/win/mtp_device_delegate_impl_win_unittest.cc
diff --git a/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win_unittest.cc b/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win_unittest.cc
index 7d0f923a92069f3ea4d7efcd0fe49b967d0d2483..3b97bc26c8f4a4b9d3dd0938f1125b2bd449881c 100644
--- a/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win_unittest.cc
+++ b/chrome/browser/media_galleries/win/mtp_device_delegate_impl_win_unittest.cc
@@ -111,6 +111,11 @@ void MTPDeviceDelegateImplWinTest::SetUp() {
 }
 
 void MTPDeviceDelegateImplWinTest::TearDown() {
+  // The MediaFileSystemRegistry owned by the TestingBrowserProcess must be
+  // destroyed before the StorageMonitor because it calls
+  // StorageMonitor::RemoveObserver() in its destructor.
+  TestingBrowserProcess::DeleteInstance();
+
   // Windows storage monitor must be destroyed on the same thread
   // as construction.
   TestStorageMonitor::Destroy();