V2: Implement reparenting, bounds and visibility change notifications, and write more tests.

ui/v2/public/view.h

 // Copyright (c) 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_V2_PUBLIC_VIEW_H_
 #define UI_V2_PUBLIC_VIEW_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 18 matching lines @@
 
   // Configuration.
 
   void set_owned_by_parent(bool owned_by_parent) {
     owned_by_parent_ = owned_by_parent;
   }
 
   // View takes ownership.
   void SetPainter(Painter* painter);
 
+  // See documentation in layout.h. A layout manager's rules apply to this
+  // View's children.
   // View takes ownership.
   void SetLayout(Layout* layout);
 
   // Observation.
 
   void AddObserver(ViewObserver* observer);
   void RemoveObserver(ViewObserver* observer);
 
   // Disposition.
 
@@ skipping 14 matching lines @@
 
   bool Contains(View* child) const;
 
   void StackChildAtTop(View* child);
   void StackChildAtBottom(View* child);
   void StackChildAbove(View* child, View* other);
   void StackChildBelow(View* child, View* other);
 
  private:
   friend class Layout;
-  friend class ViewObserversAccessor;
-
-  void SetBoundsInternal(const gfx::Rect& bounds);
+  friend class ViewPrivate;
 
   // Disposition attributes.
   gfx::Rect bounds_;
   bool visible_;
 
   scoped_ptr<Painter> painter_;
   scoped_ptr<Layout> layout_;
 
   // Tree.
   bool owned_by_parent_;
   View* parent_;
   Children children_;
 
   ObserverList<ViewObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(View);
 };
 
 }  // namespace v2
 
 #endif  // UI_V2_PUBLIC_VIEW_H_