Gender-neutralize a few more comments / strings.

chrome/browser/chromeos/file_manager/volume_manager.cc

Index: chrome/browser/chromeos/file_manager/volume_manager.cc
diff --git a/chrome/browser/chromeos/file_manager/volume_manager.cc b/chrome/browser/chromeos/file_manager/volume_manager.cc
index 237de537205355eda165f58f776fc3a13380204d..ab8f81508e32904a48ae11ebc96b58bb7709956f 100644
--- a/chrome/browser/chromeos/file_manager/volume_manager.cc
+++ b/chrome/browser/chromeos/file_manager/volume_manager.cc
@@ -676,7 +676,7 @@ void VolumeManager::OnProvidedFileSystemUnmount(
 
 void VolumeManager::OnExternalStorageDisabledChanged() {
   // If the policy just got disabled we have to unmount every device currently
-  // mounted. The opposite is fine - we can let the user re-plug her device to
+  // mounted. The opposite is fine - we can let the user re-plug their device to
   // make it available.
   if (profile_->GetPrefs()->GetBoolean(prefs::kExternalStorageDisabled)) {
     // We do not iterate on mount_points directly, because mount_points can