Hide/show widget on Windows screen lock/unlock

ui/views/controls/native/native_view_host.h

 // Copyright (c) 2011 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_CONTROLS_NATIVE_NATIVE_VIEW_HOST_H_
 #define UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 65 matching lines @@
   void NativeViewDestroyed();
 
   // Overridden from View:
   gfx::Size GetPreferredSize() const override;
   void Layout() override;
   void OnPaint(gfx::Canvas* canvas) override;
   void VisibilityChanged(View* starting_from, bool is_visible) override;
   void OnFocus() override;
   gfx::NativeViewAccessible GetNativeViewAccessible() override;
   gfx::NativeCursor GetCursor(const ui::MouseEvent& event) override;
+  void OnSoftVisibilityChanged(bool visible) override;
 
  protected:
   bool GetNeedsNotificationWhenVisibleBoundsChange() const override;
   void OnVisibleBoundsChanged() override;
   void ViewHierarchyChanged(
       const ViewHierarchyChangedDetails& details) override;
   const char* GetClassName() const override;
 
  private:
   friend class test::NativeViewHostTestBase;
@@ skipping 26 matching lines @@
 
   // Color to paint in the background while resizing.
   SkColor resize_background_color_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewHost);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_H_