Ignoring minimum size requirements for maximized windows, full screen windows and too small screens

ash/wm/panels/panel_layout_manager.cc

Index: ash/wm/panels/panel_layout_manager.cc
diff --git a/ash/wm/panels/panel_layout_manager.cc b/ash/wm/panels/panel_layout_manager.cc
index 8954e57f39e4dbb41c8799e48962fe1a5320cf57..5a8d2e935e3a31faf2d2e17c87893d454bdfe056 100644
--- a/ash/wm/panels/panel_layout_manager.cc
+++ b/ash/wm/panels/panel_layout_manager.cc
@@ -27,6 +27,7 @@
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_delegate.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_tracker.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
@@ -433,6 +434,12 @@ void PanelLayoutManager::SetChildBounds(aura::Window* child,
       panel_windows_.insert(new_position, dragged_panel_info);
     }
   }
+  // Respect the minimum size of the window.
+  if (child->delegate()) {
+    const gfx::Size& min_size = child->delegate()->GetMinimumSize();
+    bounds.set_width(std::max(min_size.width(), bounds.width()));
+    bounds.set_height(std::max(min_size.height(), bounds.height()));
+  }
 
   SetChildBoundsDirect(child, bounds);
   Relayout();