Added common layout framework for system menu rows.

ui/views/test/test_views.h

 // 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.
 
 #ifndef UI_VIEWS_TEST_TEST_VIEWS_H_
 #define UI_VIEWS_TEST_TEST_VIEWS_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "ui/events/event_constants.h"
 #include "ui/views/view.h"
 
 namespace views {
 
 // A view that requests a set amount of space.
 class StaticSizedView : public View {
  public:
+  StaticSizedView();
   explicit StaticSizedView(const gfx::Size& size);

[sky, 2016/10/20 15:59:11]

How about making the size an optional parameter? Also, can you rename size to
preferred_size as that better conveys which size this sets.

[bruthig, 2016/10/20 19:01:34]

Done.

   ~StaticSizedView() override;
 
   void set_minimum_size(const gfx::Size& minimum_size) {
     minimum_size_ = minimum_size;
   }
 
   void set_maximum_size(const gfx::Size& maximum_size) {
     maximum_size_ = maximum_size;
   }
 
@@ skipping 81 matching lines @@
   std::map<ui::EventType, int> event_count_;
   int last_flags_;
   HandleMode handle_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(EventCountView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_TEST_TEST_VIEWS_H_