Remove stops_event_propagation from Window, since it's broken.

ash/wm/event_client_impl.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ash/wm/event_client_impl.h"
+
+#include "ash/shell.h"
+#include "ash/shell_window_ids.h"
+#include "ui/aura/root_window.h"
+#include "ui/aura/window.h"
+
+namespace ash {
+namespace internal {
+
+EventClientImpl::EventClientImpl(aura::RootWindow* root_window)
+    : root_window_(root_window) {
+  aura::client::SetEventClient(root_window_, this);
+}
+
+EventClientImpl::~EventClientImpl() {
+  aura::client::SetEventClient(root_window_, NULL);
+}
+
+bool EventClientImpl::CanProcessEventsWithinSubtree(
+    const aura::Window* window) const {
+  if (Shell::GetInstance()->IsScreenLocked()) {
+    aura::Window* lock_screen_containers =
+        Shell::GetInstance()->GetContainer(
+            kShellWindowId_LockScreenContainersContainer);
+    aura::Window* lock_screen_related_containers =
+        Shell::GetInstance()->GetContainer(
+            kShellWindowId_LockScreenRelatedContainersContainer);
+    return lock_screen_containers->Contains(window) ||
+        lock_screen_related_containers->Contains(window);
+  }
+  return true;
+}
+
+}  // namespace internal
+}  // namespace ash