Index: cc/trees/layer_tree.cc |
diff --git a/cc/trees/layer_tree.cc b/cc/trees/layer_tree.cc |
index 3d46e3fae10b4ccb39fac6c7b0116a0f9f1cd40c..38926f657107bad09e88664b53be24257d083c6c 100644 |
--- a/cc/trees/layer_tree.cc |
+++ b/cc/trees/layer_tree.cc |
@@ -264,6 +264,10 @@ Layer* LayerTree::LayerById(int id) const { |
return iter != layer_id_map_.end() ? iter->second : nullptr; |
} |
+size_t LayerTree::NumLayers() const { |
+ return layer_id_map_.size(); |
+} |
+ |
bool LayerTree::UpdateLayers(const LayerList& update_layer_list, |
bool* content_is_suitable_for_gpu) { |
base::AutoReset<bool> painting(&in_paint_layer_contents_, true); |