cc: Fix hit-testing in zero-opacity layers.

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index d93e3d5e032e80c8cf353b672338904f832a16f2..bd6d15c4dd08cef9772bd5e69bd3a58768e1efb7 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -1057,7 +1057,7 @@ void LayerTreeHost::PaintLayerContents(
     if (it.represents_target_render_surface()) {
       PaintMasksForRenderSurface(
           *it, queue, did_paint_content, need_more_updates);
-    } else if (it.represents_itself() && it->DrawsContent()) {
+    } else if (it.represents_itself() && !it->draw_properties().skip_drawing) {
       devtools_instrumentation::ScopedLayerTreeTask
           update_layer(devtools_instrumentation::kUpdateLayer, it->id(), id());
       DCHECK(!it->paint_properties().bounds.IsEmpty());