Purge the App Launcher code from Windows.

ui/app_list/views/app_list_view.h

 // 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.
 
 #ifndef UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_
 #define UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 85 matching lines @@
   void SetAppListOverlayVisible(bool visible);
 
   // Returns true if the app list should be centered and in landscape mode.
   bool ShouldCenterWindow() const;
 
   views::Widget* search_box_widget() const { return search_box_widget_; }
 
   // Overridden from views::View:
   gfx::Size GetPreferredSize() const override;
   void OnPaint(gfx::Canvas* canvas) override;
-  void OnThemeChanged() override;
 
   // WidgetDelegate overrides:
   bool ShouldHandleSystemCommands() const override;
   bool ShouldDescendIntoChildForEventHandling(
       gfx::NativeView child,
       const gfx::Point& location) override;
 
   // Overridden from AppListViewDelegateObserver:
   void OnProfilesChanged() override;
   void OnShutdown() override;
 
   void Prerender();
 
   void SetProfileByPath(const base::FilePath& profile_path);
 
   void AddObserver(AppListViewObserver* observer);
   void RemoveObserver(AppListViewObserver* observer);
 
   // Set a callback to be called the next time any app list paints.
   void SetNextPaintCallback(const base::Closure& callback);
 
-#if defined(OS_WIN)
-  HWND GetHWND() const;
-#endif
-
   AppListMainView* app_list_main_view() { return app_list_main_view_; }
 
   // Gets the PaginationModel owned by this view's apps grid.
   PaginationModel* GetAppsPaginationModel();
 
   // Overridden from views::View:
   bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
   void Layout() override;
   void SchedulePaintInRect(const gfx::Rect& rect) override;
 
@@ skipping 47 matching lines @@
 
   // For UMA and testing. If non-null, triggered when the app list is painted.
   base::Closure next_paint_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_