Update SetPaintToLayer to accept LayerType

ui/views/animation/ink_drop_host_view.cc

Index: ui/views/animation/ink_drop_host_view.cc
diff --git a/ui/views/animation/ink_drop_host_view.cc b/ui/views/animation/ink_drop_host_view.cc
index f5a7df26a74b78e2ebe6329e9b389e7cf915c5ba..af280baeca84d2d2b8c4823c354a7ec17d1df11c 100644
--- a/ui/views/animation/ink_drop_host_view.cc
+++ b/ui/views/animation/ink_drop_host_view.cc
@@ -130,7 +130,7 @@ InkDropHostView::~InkDropHostView() {
 
 void InkDropHostView::AddInkDropLayer(ui::Layer* ink_drop_layer) {
   old_paint_to_layer_ = layer() != nullptr;
-  SetPaintToLayer(true);
+  SetPaintToLayer();
   layer()->SetFillsBoundsOpaquely(false);
   ink_drop_mask_ = CreateInkDropMask();
   if (ink_drop_mask_)
@@ -148,7 +148,11 @@ void InkDropHostView::RemoveInkDropLayer(ui::Layer* ink_drop_layer) {
   layer()->Remove(ink_drop_layer);
   // Layers safely handle destroying a mask layer before the masked layer.
   ink_drop_mask_.reset();
-  SetPaintToLayer(old_paint_to_layer_);
+  if (old_paint_to_layer_) {
+    SetPaintToLayer();

[bruthig, 2017/01/23 16:25:02]

nit: It's unnecessary to call SetPaintToLayer() here.  I think you only need to
handle the else case here.

[yiyix, 2017/01/23 16:49:48]

Thanks, I didn't really read this code. The create layer is handled in
AddInkDropLayer and destroy layer is handled in this function
RemoveInkDropLayer. I will update it.

+  } else {
+    DetachLayer();
+  }
 }
 
 std::unique_ptr<InkDrop> InkDropHostView::CreateInkDrop() {