ash: Move AppList support to ShelfWidget, expose ShelfWidget in WmShelf

ash/shell_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/shell.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/common/ash_switches.h"
@@ skipping 353 matching lines @@
                                    ui::MENU_SOURCE_MOUSE));
 }
 
 TEST_F(ShellTest, ManagedWindowModeBasics) {
   if (!SupportsHostWindowResize())
     return;
 
   // We start with the usual window containers.
   ExpectAllContainers();
   // Shelf is visible.
-  ShelfWidget* shelf_widget = GetPrimaryShelf()->GetShelfWidgetForTesting();
+  ShelfWidget* shelf_widget = GetPrimaryShelf()->shelf_widget();
   EXPECT_TRUE(shelf_widget->IsVisible());
   // Shelf is at bottom-left of screen.
   EXPECT_EQ(0, shelf_widget->GetWindowBoundsInScreen().x());
   EXPECT_EQ(Shell::GetPrimaryRootWindow()->GetHost()->GetBounds().height(),
             shelf_widget->GetWindowBoundsInScreen().bottom());
   // We have a desktop background but not a bare layer.
   // TODO (antrim): enable once we find out why it fails component build.
   //  DesktopBackgroundWidgetController* background =
   //      Shell::GetPrimaryRootWindow()->
   //          GetProperty(kWindowDesktopComponent);
@@ skipping 118 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(ShellTest2);
 };
 
 TEST_F(ShellTest2, DontCrashWhenWindowDeleted) {
   window_.reset(new aura::Window(NULL));
   window_->Init(ui::LAYER_NOT_DRAWN);
 }
 
 }  // namespace ash