Revert of "Added common layout framework for system menu rows."

ash/common/system/tray/tray_popup_layout_factory.h

Index: ash/common/system/tray/tray_popup_layout_factory.h
diff --git a/ash/common/system/tray/tray_popup_layout_factory.h b/ash/common/system/tray/tray_popup_layout_factory.h
deleted file mode 100644
index f279be6da57eb3c1286239428cd6309f831507ee..0000000000000000000000000000000000000000
--- a/ash/common/system/tray/tray_popup_layout_factory.h
+++ /dev/null
@@ -1,49 +0,0 @@
-// Copyright 2016 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 ASH_COMMON_SYSTEM_TRAY_TRAY_POPUP_LAYOUT_FACTORY_H_
-#define ASH_COMMON_SYSTEM_TRAY_TRAY_POPUP_LAYOUT_FACTORY_H_
-
-#include <memory>
-
-#include "ash/common/system/tray/tri_view.h"
-#include "base/macros.h"
-
-namespace views {
-class View;
-}  // namespace views
-
-namespace ash {
-
-// Factory functions for system menu row container views.
-class TrayPopupLayoutFactory {
- public:
-  // Creates a default container view to be used most system menu rows. The
-  // caller takes over ownership of the created view.
-  //
-  // The returned view consists of 3 regions: START, CENTER, and END. Any child
-  // Views added to the START and END containers will be added horizonatlly and
-  // any Views added to the CENTER container will be added vertically.
-  //
-  // The START and END containers have a fixed width but can grow into the
-  // CENTER container if space is required and available.
-  //
-  // The CENTER container has a flexible width.
-  static TriView* CreateDefaultRowView();
-
- private:
-  TrayPopupLayoutFactory();
-  ~TrayPopupLayoutFactory();
-
-  // Configures the specified |container| view with the default layout. Used by
-  // CreateDefaultRowView().
-  static void ConfigureDefaultLayout(TriView* tri_view,
-                                     TriView::Container container);
-
-  DISALLOW_COPY_AND_ASSIGN(TrayPopupLayoutFactory);
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SYSTEM_TRAY_TRAY_POPUP_LAYOUT_FACTORY_H_