Hide/show widget on Windows screen lock/unlock

ui/views/widget/desktop_aura/desktop_window_tree_host_win.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 "ui/views/widget/desktop_aura/desktop_window_tree_host_win.h"
 
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/cursor_client.h"
@@ skipping 769 matching lines @@
 }
 
 void DesktopWindowTreeHostWin::HandleVisibilityChanging(bool visible) {
   native_widget_delegate_->OnNativeWidgetVisibilityChanging(visible);
 }
 
 void DesktopWindowTreeHostWin::HandleVisibilityChanged(bool visible) {
   native_widget_delegate_->OnNativeWidgetVisibilityChanged(visible);
 }
 
+void DesktopWindowTreeHostWin::HandleSoftVisibilityChanged(bool visible) {
+  native_widget_delegate_->OnSoftVisibilityChanged(visible);
+}
+
 void DesktopWindowTreeHostWin::HandleClientSizeChanged(
     const gfx::Size& new_size) {
   if (dispatcher())
     OnHostResized(new_size);
 }
 
 void DesktopWindowTreeHostWin::HandleFrameChanged() {
   SetWindowTransparency();
   // Replace the frame and layout the contents.
   GetWidget()->non_client_view()->UpdateFrame();
@@ skipping 161 matching lines @@
 
 // static
 DesktopWindowTreeHost* DesktopWindowTreeHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura) {
   return new DesktopWindowTreeHostWin(native_widget_delegate,
                                       desktop_native_widget_aura);
 }
 
 }  // namespace views