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

ui/views/test/widget_test.h

 // Copyright 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.
 
 #ifndef UI_VIEWS_TEST_WIDGET_TEST_H_
 #define UI_VIEWS_TEST_WIDGET_TEST_H_
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 133 matching lines @@
 
  private:
   Widget* widget_;
   View* contents_view_ = nullptr;
   int window_closing_count_ = 0;
   gfx::Rect initial_bounds_ = gfx::Rect(100, 100, 200, 200);
 
   DISALLOW_COPY_AND_ASSIGN(TestDesktopWidgetDelegate);
 };
 
+// Testing widget delegate that creates a widget with a single view, which is
+// the initially focused view.
+class TestInitialFocusWidgetDelegate : public TestDesktopWidgetDelegate {
+ public:
+  explicit TestInitialFocusWidgetDelegate(gfx::NativeWindow context);
+  ~TestInitialFocusWidgetDelegate() override;
+
+  View* view() { return view_; }
+
+  // WidgetDelegate override:
+  View* GetInitiallyFocusedView() override;
+
+ private:
+  View* view_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestInitialFocusWidgetDelegate);
+};
+
 }  // namespace test
 }  // namespace views
 
 #endif  // UI_VIEWS_TEST_WIDGET_TEST_H_