Make View::Paint use ui::PaintRecorder to access PaintContext's canvas

ui/views/widget/native_widget_aura.cc

Index: ui/views/widget/native_widget_aura.cc
diff --git a/ui/views/widget/native_widget_aura.cc b/ui/views/widget/native_widget_aura.cc
index bae4c7754da730fbdcb273101fe74661be1fa71e..bf113e6e119de7bcb3ab99b2f21a1d185eba9ef7 100644
--- a/ui/views/widget/native_widget_aura.cc
+++ b/ui/views/widget/native_widget_aura.cc
@@ -826,8 +826,8 @@ void NativeWidgetAura::OnCaptureLost() {
   delegate_->OnMouseCaptureLost();
 }
 
-void NativeWidgetAura::OnPaint(gfx::Canvas* canvas) {
-  delegate_->OnNativeWidgetPaint(canvas);
+void NativeWidgetAura::OnPaint(const ui::PaintContext& context) {
+  delegate_->OnNativeWidgetPaint(context);
 }
 
 void NativeWidgetAura::OnDeviceScaleFactorChanged(float device_scale_factor) {