Remove stops_event_propagation from Window, since it's broken.

ash/shell.cc

Index: ash/shell.cc
===================================================================
--- ash/shell.cc	(revision 127786)
+++ ash/shell.cc	(working copy)
@@ -37,6 +37,7 @@
 #include "ash/wm/base_layout_manager.h"
 #include "ash/wm/custom_frame_view_ash.h"
 #include "ash/wm/dialog_frame_view.h"
+#include "ash/wm/event_client_impl.h"
 #include "ash/wm/panel_window_event_filter.h"
 #include "ash/wm/panel_layout_manager.h"
 #include "ash/wm/partial_screenshot_event_filter.h"
@@ -185,7 +186,7 @@
       lock_screen_containers);
   lock_container->SetLayoutManager(
       new internal::BaseLayoutManager(root_window));
-  lock_container->set_stops_event_propagation(true);
+  // TODO(beng): stopsevents
 
   aura::Window* lock_modal_container = CreateContainer(
       internal::kShellWindowId_LockSystemModalContainer,
@@ -457,6 +458,7 @@
   resize_shadow_controller_.reset();
   shadow_controller_.reset();
   window_cycle_controller_.reset();
+  event_client_.reset();
 
   // Launcher widget has a InputMethodBridge that references to
   // input_method_filter_'s input_method_. So explicitly release launcher_
@@ -540,6 +542,8 @@
   root_window_layout_ = new internal::RootWindowLayoutManager(root_window);
   root_window->SetLayoutManager(root_window_layout_);
 
+  event_client_.reset(new internal::EventClientImpl(root_window));
+
   if (delegate_.get())
     status_widget_ = delegate_->CreateStatusArea();
 
@@ -665,9 +669,7 @@
 }
 
 bool Shell::IsScreenLocked() const {
-  const aura::Window* lock_screen_container = GetContainer(
-      internal::kShellWindowId_LockScreenContainer);
-  return lock_screen_container->StopsEventPropagation();
+  return !delegate_.get() || delegate_->IsScreenLocked();
 }
 
 bool Shell::IsModalWindowOpen() const {