Update the comments related to the host window in SelectFileDialogImplGTK

chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc

Index: chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
diff --git a/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc b/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
index 95f9a448378e6fb26e64a904fa3117dfbd12a730..65ea0ee5120b8bd5a95c50b0cddf1dab595cd954 100644
--- a/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
+++ b/chrome/browser/ui/libgtk2ui/select_file_dialog_impl_gtk2.cc
@@ -116,9 +116,6 @@ void SelectFileDialogImplGTK::SelectFileImpl(
     gfx::NativeWindow owning_window,
     void* params) {
   type_ = type;
-  // |owning_window| can be null when user right-clicks on a downloadable item
-  // and chooses 'Open Link in New Tab' when 'Ask where to save each file
-  // before downloading.' preference is turned on. (http://crbug.com/29213)
   if (owning_window) {
     owning_window->AddObserver(this);
     parents_.insert(owning_window);
@@ -417,11 +414,8 @@ void* SelectFileDialogImplGTK::PopParamsForDialog(GtkWidget* dialog) {
 void SelectFileDialogImplGTK::FileDialogDestroyed(GtkWidget* dialog) {
   dialogs_.erase(dialog);
 
-  // Parent may be NULL in a few cases: 1) on shutdown when
-  // AllBrowsersClosed() trigger this handler after all the browser
-  // windows got destroyed, or 2) when the parent tab has been opened by
-  // 'Open Link in New Tab' context menu on a downloadable item and
-  // the tab has no content (see the comment in SelectFile as well).
+  // |parent| can be NULL when closing the host window
+  // while opening the file-picker.
   aura::Window* parent = GetAuraTransientParent(dialog);
   if (!parent)
     return;