cc: Add mask and replica layer ids to the effect tree

cc/layers/layer_impl_test_properties.cc

Index: cc/layers/layer_impl_test_properties.cc
diff --git a/cc/layers/layer_impl_test_properties.cc b/cc/layers/layer_impl_test_properties.cc
index d4b946a46e2f91a6230eeb006541d82f96205248..631272d7f95e87c86b44b5be126437ec98e93647 100644
--- a/cc/layers/layer_impl_test_properties.cc
+++ b/cc/layers/layer_impl_test_properties.cc
@@ -4,12 +4,15 @@
 
 #include "cc/layers/layer_impl_test_properties.h"
 
+#include "cc/layers/layer_impl.h"
 #include "cc/output/copy_output_request.h"
+#include "cc/trees/layer_tree_impl.h"
 
 namespace cc {
 
-LayerImplTestProperties::LayerImplTestProperties()
-    : double_sided(true),
+LayerImplTestProperties::LayerImplTestProperties(LayerImpl* owning_layer)
+    : owning_layer(owning_layer),
+      double_sided(true),
       force_render_surface(false),
       is_container_for_fixed_position_layers(false),
       should_flatten_transform(true),
@@ -19,8 +22,31 @@ LayerImplTestProperties::LayerImplTestProperties()
       num_unclipped_descendants(0),
       opacity(1.f),
       scroll_parent(nullptr),
-      clip_parent(nullptr) {}
+      clip_parent(nullptr),
+      mask_layer(nullptr),
+      replica_layer(nullptr) {}
 
 LayerImplTestProperties::~LayerImplTestProperties() {}
 
+void LayerImplTestProperties::SetMaskLayer(std::unique_ptr<LayerImpl> mask) {
+  if (mask_layer)
+    owning_layer->layer_tree_impl()->RemoveLayer(mask_layer->id());
+  mask_layer = mask.get();
+  if (mask)
+    owning_layer->layer_tree_impl()->AddLayer(std::move(mask));
+}
+
+void LayerImplTestProperties::SetReplicaLayer(
+    std::unique_ptr<LayerImpl> replica) {
+  if (replica_layer) {
+    replica_layer->test_properties()->SetMaskLayer(nullptr);
+    owning_layer->layer_tree_impl()->RemoveLayer(replica_layer->id());
+  }
+  replica_layer = replica.get();
+  if (replica) {
+    replica->SetParent(owning_layer);
+    owning_layer->layer_tree_impl()->AddLayer(std::move(replica));
+  }
+}
+
 }  // namespace cc