Make File-Picker modal on Linux

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
index 641c5e8e10debf4780f22ee500bcff7cf844defb..53a4aa161f786f2a2486cc5cf46a0bc6347e8eeb 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
@@ -13,6 +13,7 @@
 #include "base/cancelable_callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
+#include "ui/aura/scoped_window_targeter.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/cursor/cursor_loader_x11.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
@@ -84,6 +85,10 @@ class VIEWS_EXPORT DesktopWindowTreeHostX11
   // Deallocates the internal list of open windows.
   static void CleanUpWindowList();
 
+  XID GetModalDialog();
+  void EnableEventListening();
+  void DisableEventListening(XID dialog);

[sadrul, 2015/06/30 17:30:56]

document

[joone, 2015/07/01 03:16:06]

Done.

+
  protected:
   // Overridden from DesktopWindowTreeHost:
   void Init(aura::Window* content_window,
@@ -347,6 +352,10 @@ class VIEWS_EXPORT DesktopWindowTreeHostX11
 
   base::WeakPtrFactory<DesktopWindowTreeHostX11> close_widget_factory_;
 
+  scoped_ptr<aura::ScopedWindowTargeter> scoped_targeter_;

[sadrul, 2015/06/30 17:30:56]

Call this |targeter_for_modal_| (or something like that), so it's clear that
this is only active for a modal dialog.

[joone, 2015/07/01 03:16:06]

Done.

+
+  XID modal_dialog_xid_;
+
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostX11);
 };