Choose the right window to switch to when a panel is deactivated on Windows.

chrome/browser/ui/panels/panel.cc

 // 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.
 
 #include "chrome/browser/ui/panels/panel.h"
 
 #include "base/logging.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 225 matching lines @@
 gfx::Rect Panel::GetBounds() const {
   return native_panel_->GetPanelBounds();
 }
 
 bool Panel::IsMaximized() const {
   // TODO(jennb): Figure out how this applies to Panels. Means isZoomed.
   return false;
 }
 
 bool Panel::IsMinimized() const {
-  NOTIMPLEMENTED();
-  return false;
+  return expansion_state_ != EXPANDED;
 }
 
 void Panel::SetFullscreen(bool fullscreen) {
   NOTIMPLEMENTED();
 }
 
 bool Panel::IsFullscreen() const {
   return false;
 }
 
@@ skipping 305 matching lines @@
   RequestRenderViewHostToDisableScrollbars(GetRenderViewHost());
 }
 
 Browser* Panel::browser() const {
   return native_panel_->GetPanelBrowser();
 }
 
 void Panel::DestroyBrowser() {
   native_panel_->DestroyPanelBrowser();
 }