Fixes bug where launcher background would remain painted when it

ash/wm/workspace/workspace_manager_unittest.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 "ash/wm/workspace/workspace_manager.h"
 
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
@@ skipping 677 matching lines @@
 
   // Maximize should trigger containing the window.
   w1->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MAXIMIZED);
   EXPECT_TRUE(manager_->Contains(w1.get()));
 
   // And resetting to normal should remove it.
   w1->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_NORMAL);
   EXPECT_FALSE(manager_->Contains(w1.get()));
 }
 
+// Verifies going from maximized to minimized sets the right state for painting
+// the background of the launcher.
+TEST_F(WorkspaceManagerTest, MinimizeResetsVisibility) {
+  scoped_ptr<Window> w1(CreateTestWindow());
+  w1->Show();
+  wm::ActivateWindow(w1.get());
+  w1->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MAXIMIZED);
+  w1->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_MINIMIZED);
+  EXPECT_EQ(ShelfLayoutManager::VISIBLE,
+            Shell::GetInstance()->shelf()->visibility_state());
+  EXPECT_FALSE(Shell::GetInstance()->launcher()->paints_background());
+}
+
 }  // namespace internal
 }  // namespace ash