WIP - compositor worker mega patch.

cc/layers/layer_unittest.cc

Index: cc/layers/layer_unittest.cc
diff --git a/cc/layers/layer_unittest.cc b/cc/layers/layer_unittest.cc
index a9caa02f651b9efba26c64f705509d35f957616a..75d433563223ffdf60a4da81df9eb69fb8035178 100644
--- a/cc/layers/layer_unittest.cc
+++ b/cc/layers/layer_unittest.cc
@@ -1897,6 +1897,28 @@ TEST_F(LayerTest, DeleteMaskAndReplicaLayer) {
   EXPECT_EQ(nullptr, layer_dest_root->replica_layer());
 }
 
+TEST_F(LayerTest, ElementIdAndMutablePropertiesArePushed) {
+  scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
+  scoped_ptr<LayerImpl> impl_layer =
+      LayerImpl::Create(host_impl_.active_tree(), 1);
+
+  EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
+                                  layer_tree_host_->SetRootLayer(test_layer));
+
+  EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(2);
+
+  test_layer->SetElementId(2);
+  test_layer->SetMutableProperties(kMutablePropertyTransform);
+
+  EXPECT_EQ(0lu, impl_layer->element_id());
+  EXPECT_EQ(kMutablePropertyNone, impl_layer->mutable_properties());
+
+  test_layer->PushPropertiesTo(impl_layer.get());
+
+  EXPECT_EQ(2lu, impl_layer->element_id());
+  EXPECT_EQ(kMutablePropertyTransform, impl_layer->mutable_properties());
+}
+
 TEST_F(LayerTest, SimplePropertiesSerialization) {
   /* Testing serialization of properties for a tree that looks like this:
           root+