mash: Migrate shelf app list button to wm common types

ash/wm/overview/window_selector_unittest.cc

 // 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.
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/accessibility_delegate.h"
 #include "ash/common/accessibility_types.h"
@@ skipping 1195 matching lines @@
   ClickWindow(window2.get());
   EXPECT_EQ(normal_window_bounds.ToString(),
             window2->GetTargetBounds().ToString());
 }
 
 // Tests that beginning window selection hides the app list.
 TEST_P(WindowSelectorTest, SelectingHidesAppList) {
   gfx::Rect bounds(0, 0, 400, 400);
   std::unique_ptr<aura::Window> window1(CreateWindow(bounds));
   std::unique_ptr<aura::Window> window2(CreateWindow(bounds));
-  Shell::GetInstance()->ShowAppList(nullptr);
-  EXPECT_TRUE(Shell::GetInstance()->GetAppListTargetVisibility());
+  WmShell::Get()->ShowAppList();
+  EXPECT_TRUE(WmShell::Get()->GetAppListTargetVisibility());
   ToggleOverview();
-  EXPECT_FALSE(Shell::GetInstance()->GetAppListTargetVisibility());
+  EXPECT_FALSE(WmShell::Get()->GetAppListTargetVisibility());
   ToggleOverview();
 }
 
 // Tests that a minimized window's visibility and layer visibility is correctly
 // changed when entering overview and restored when leaving overview mode.
 // Crashes after the skia roll in http://crrev.com/274114.
 // http://crbug.com/379570
 TEST_P(WindowSelectorTest, DISABLED_MinimizedWindowVisibility) {
   gfx::Rect bounds(0, 0, 400, 400);
   std::unique_ptr<aura::Window> window1(CreateWindow(bounds));
@@ skipping 835 matching lines @@
       bounds.y());
   EXPECT_LE(transformed_rect.bottom(), bounds.bottom());
   EXPECT_NEAR(transformed_rect.x() - bounds.x(),
               bounds.right() - transformed_rect.right(), 1);
   EXPECT_NEAR(
       transformed_rect.y() + (int)(scale * inset) - header_height - bounds.y(),
       bounds.bottom() - transformed_rect.bottom(), 1);
 }
 
 }  // namespace ash