A window should not get activated or get input focus if it's behind the lock screen.

ui/views/widget/widget_interactive_uitest.cc

 // Copyright (c) 2013 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 <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/path_service.h"
@@ skipping 1154 matching lines @@
   EXPECT_NE(ui::SHOW_STATE_FULLSCREEN, GetWidgetShowState(toplevel));
 
   // And it stays maximized after getting out of full screen.
   EXPECT_EQ(ui::SHOW_STATE_MAXIMIZED, GetWidgetShowState(toplevel));
 
   // Clean up.
   toplevel->Close();
   RunPendingMessages();
 }
 
-// Testing widget delegate that creates a widget with a single view, which
-// should be initially focused.
-class TestInitialFocusWidgetDelegate : public TestDesktopWidgetDelegate {
- public:
-  explicit TestInitialFocusWidgetDelegate(gfx::NativeWindow context)
-      : view_(new View) {
-    view_->SetFocusable(true);
-
-    Widget::InitParams params(Widget::InitParams::TYPE_WINDOW);
-    params.context = context;
-    InitWidget(params);
-    GetWidget()->GetContentsView()->AddChildView(view_);
-  }
-
-  View* view() { return view_; }
-
-  // DialogDelegateView:
-  View* GetInitiallyFocusedView() override { return view_; }
-
- private:
-  View* view_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestInitialFocusWidgetDelegate);
-};
-
 // Testing initial focus is assigned properly for normal top-level widgets,
 // and subclasses that specify a initially focused child view.
 TEST_F(WidgetTestInteractive, InitialFocus) {
   // By default, there is no initially focused view (even if there is a
   // focusable subview).
   Widget* toplevel(CreateTopLevelPlatformWidget());
   View* view = new View;
   view->SetFocusable(true);
   toplevel->GetContentsView()->AddChildView(view);
 
@@ skipping 522 matching lines @@
 
   ui::KeyEvent key_event2(key_event);
   widget->OnKeyEvent(&key_event2);
   EXPECT_FALSE(key_event2.stopped_propagation());
 
   widget->CloseNow();
 }
 
 }  // namespace test
 }  // namespace views