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

ash/wm/dock/docked_window_layout_manager.cc

 // 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.
 
 #include "ash/wm/dock/docked_window_layout_manager.h"
 
 #include "ash/ash_switches.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
@@ skipping 689 matching lines @@
     return;
   if (visible)
     wm::GetWindowState(child)->Restore();
   Relayout();
   UpdateDockBounds(DockedWindowLayoutManagerObserver::CHILD_CHANGED);
 }
 
 void DockedWindowLayoutManager::SetChildBounds(
     aura::Window* child,
     const gfx::Rect& requested_bounds) {
+  // The minimum constraints have to be applied first by the layout manager.
+  gfx::Rect actual_new_bounds(requested_bounds);
+  if (child->delegate()) {
+    const gfx::Size& min_size = child->delegate()->GetMinimumSize();
+    actual_new_bounds.set_width(
+        std::max(min_size.width(), actual_new_bounds.width()));
+    actual_new_bounds.set_height(
+        std::max(min_size.height(), actual_new_bounds.height()));
+  }
   // Whenever one of our windows is moved or resized enforce layout.
-  SetChildBoundsDirect(child, requested_bounds);
+  SetChildBoundsDirect(child, actual_new_bounds);
   if (IsPopupOrTransient(child))
     return;
   ShelfLayoutManager* shelf_layout =
       ShelfLayoutManager::ForShelf(dock_container_);
   if (shelf_layout)
     shelf_layout->UpdateVisibilityState();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // DockedWindowLayoutManager, ash::ShellObserver implementation:
@@ skipping 587 matching lines @@
 
 void DockedWindowLayoutManager::OnKeyboardBoundsChanging(
     const gfx::Rect& keyboard_bounds) {
   // This bounds change will have caused a change to the Shelf which does not
   // propagate automatically to this class, so manually recalculate bounds.
   Relayout();
   UpdateDockBounds(DockedWindowLayoutManagerObserver::KEYBOARD_BOUNDS_CHANGING);
 }
 
 }  // namespace ash