Preliminary interactive layout of window manager's demo_launcher

mojo/views/native_widget_view_manager.cc

Index: mojo/views/native_widget_view_manager.cc
diff --git a/mojo/views/native_widget_view_manager.cc b/mojo/views/native_widget_view_manager.cc
index 36a65786e101b21da096aa89b764d0144be3855a..e6b5bfd1782c79b3a89f8af471acdff817448a66 100644
--- a/mojo/views/native_widget_view_manager.cc
+++ b/mojo/views/native_widget_view_manager.cc
@@ -132,10 +132,21 @@ void NativeWidgetViewManager::CompositorContentsChanged(
   node_->active_view()->SetContents(bitmap);
 }
 
+void NativeWidgetViewManager::OnNodeDestroying(view_manager::Node* node) {
+  DCHECK_EQ(node, node_);
+  node->RemoveObserver(this);
+}
+
 void NativeWidgetViewManager::OnNodeDestroyed(view_manager::Node* node) {
   window_tree_host_.reset();
 }
 
+void NativeWidgetViewManager::OnNodeBoundsChanged(view_manager::Node* node,
+                                                  const gfx::Rect& old_bounds,
+                                                  const gfx::Rect& new_bounds) {
+  GetWidget()->SetBounds(gfx::Rect(node->bounds().size()));
+}
+
 void NativeWidgetViewManager::OnNodeActiveViewChanged(
     view_manager::Node* node,
     view_manager::View* old_view,