Revert of Make File-Picker modal on Linux

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
index f7495f0a2fce6bf4c2abb9161dd107de56a524b9..e2fb724b9146b073cbb06b8b2d997c12ba6c4888 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
@@ -30,7 +30,6 @@
 #include "ui/events/devices/x11/device_list_cache_x11.h"
 #include "ui/events/devices/x11/touch_factory_x11.h"
 #include "ui/events/event_utils.h"
-#include "ui/events/null_event_targeter.h"
 #include "ui/events/platform/platform_event_source.h"
 #include "ui/events/platform/x11/x11_event_source.h"
 #include "ui/gfx/display.h"
@@ -176,7 +175,6 @@ DesktopWindowTreeHostX11::DesktopWindowTreeHostX11(
       custom_window_shape_(false),
       urgency_hint_set_(false),
       activatable_(true),
-      modal_dialog_xid_(0),
       close_widget_factory_(this) {
 }
 
@@ -1527,8 +1525,7 @@ void DesktopWindowTreeHostX11::DispatchTouchEvent(ui::TouchEvent* event) {
 }
 
 void DesktopWindowTreeHostX11::DispatchKeyEvent(ui::KeyEvent* event) {
-  if (native_widget_delegate_->AsWidget()->IsActive())
-    GetInputMethod()->DispatchKeyEvent(event);
+  GetInputMethod()->DispatchKeyEvent(event);
 }
 
 void DesktopWindowTreeHostX11::ConvertEventToDifferentHost(
@@ -2021,26 +2018,6 @@ gfx::Rect DesktopWindowTreeHostX11::ToPixelRect(
   return gfx::ToEnclosingRect(rect_in_pixels);
 }
 
-XID DesktopWindowTreeHostX11::GetModalDialog() {
-  return modal_dialog_xid_;
-}
-
-void DesktopWindowTreeHostX11::DisableEventListening(XID dialog) {
-  DCHECK(dialog);
-  DCHECK(!modal_dialog_xid_);
-  modal_dialog_xid_ = dialog;
-  // ScopedWindowTargeter is used to temporarily replace the event-targeter
-  // with NullEventTargeter to make |dialog| modal.
-  targeter_for_modal_.reset(new aura::ScopedWindowTargeter(window(),
-      scoped_ptr<ui::EventTargeter>(new ui::NullEventTargeter)));
-}
-
-void DesktopWindowTreeHostX11::EnableEventListening() {
-  DCHECK(modal_dialog_xid_);
-  modal_dialog_xid_ = 0;
-  targeter_for_modal_.reset();
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopWindowTreeHost, public: