Rework View Layer Draw() to use the Layer::DrawTree() method and the LayerDelegate.

views/widget/native_widget_gtk.cc

Index: views/widget/native_widget_gtk.cc
===================================================================
--- views/widget/native_widget_gtk.cc	(revision 100773)
+++ views/widget/native_widget_gtk.cc	(working copy)
@@ -853,13 +853,11 @@
   return compositor_.get();
 }
 
-void NativeWidgetGtk::MarkLayerDirty() {
+void NativeWidgetGtk::CalculateOffsetToAncestorWithLayer(
+    gfx::Point* offset,
+    ui::Layer** layer_parent) {
 }
 
-void NativeWidgetGtk::CalculateOffsetToAncestorWithLayer(gfx::Point* offset,
-                                                         View** ancestor) {
-}
-
 void NativeWidgetGtk::ViewRemoved(View* view) {
   if (drop_target_.get())
     drop_target_->ResetTargetViewIfEquals(view);