Add a minimum cross axis size to BoxLayout.

ui/views/layout/box_layout.cc

Index: ui/views/layout/box_layout.cc
diff --git a/ui/views/layout/box_layout.cc b/ui/views/layout/box_layout.cc
index 59c21c52f4a8c9c89eae094a1af48d8f562fcc7b..45be060ede71cd6693487e343b11814e2701e343 100644
--- a/ui/views/layout/box_layout.cc
+++ b/ui/views/layout/box_layout.cc
@@ -162,6 +162,7 @@ gfx::Size BoxLayout::GetPreferredSize(const View* host) const {
 
       width = std::max(width, child->GetPreferredSize().width());
     }
+    width = std::max(width, minimum_cross_axis_size_);

[benwells, 2014/08/26 22:05:51]

Nit: initialize minimum_cross_axis_size_

[calamity, 2014/08/27 03:59:33]

Done.

   }
 
   return GetPreferredSizeForChildWidth(host, width);
@@ -278,6 +279,8 @@ gfx::Size BoxLayout::GetPreferredSizeForChildWidth(const View* host,
       child_area_bounds.Union(child_bounds);
       position += size.width() + between_child_spacing_;
     }
+    child_area_bounds.set_height(
+        std::max(child_area_bounds.height(), minimum_cross_axis_size_));
   } else {
     int height = 0;
     for (int i = 0; i < host->child_count(); ++i) {