[mus+ash] Fixes minimum browser window size (store / retrieve kPreferredSize property)

chrome/browser/ui/views/frame/top_container_view.cc

 // 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.
 
 #include "chrome/browser/ui/views/frame/top_container_view.h"
 
 #include "chrome/browser/ui/views/frame/browser_frame.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
 #include "ui/compositor/paint_context.h"
@@ skipping 15 matching lines @@
     // controls) being painted underneath them. Clip rect has already been set
     // to the bounds of this view, so just paint the frame.  Use a clone without
     // invalidation info, as we're painting something outside of the normal
     // parent-child relationship, so invalidations are no longer in the correct
     // space to compare.
     browser_view_->frame()->GetFrameView()->Paint(ui::PaintContext(
         context, ui::PaintContext::CLONE_WITHOUT_INVALIDATION));
   }
   View::PaintChildren(context);
 }
+
+void TopContainerView::ChildPreferredSizeChanged(views::View* child) {
+  PreferredSizeChanged();
+}