Simplify accelerated paint and remove windows CanvasSkiaPaint

ui/views/widget/native_widget_delegate.h

Index: ui/views/widget/native_widget_delegate.h
diff --git a/ui/views/widget/native_widget_delegate.h b/ui/views/widget/native_widget_delegate.h
index 7c75e1b4792dda0e4ba7e8780dc5e693e89e7734..4f5ed9ee71d80bd37a759dc214a2908f1835e811 100644
--- a/ui/views/widget/native_widget_delegate.h
+++ b/ui/views/widget/native_widget_delegate.h
@@ -106,11 +106,6 @@ class VIEWS_EXPORT NativeWidgetDelegate {
   // Returns true if the delegate has a FocusManager.
   virtual bool HasFocusManager() const = 0;
 
-  // Paints the widget using acceleration. If the widget is not using
-  // accelerated painting this returns false and does nothing.
-  virtual bool OnNativeWidgetPaintAccelerated(
-      const gfx::Rect& dirty_region) = 0;
-
   // Paints the rootview in the context. This will also refresh the compositor
   // tree if necessary.
   virtual void OnNativeWidgetPaint(const ui::PaintContext& context) = 0;