Get rid of graphics layer anchor points, and replace with transform origin.

cc/test/layer_tree_test.cc

Index: cc/test/layer_tree_test.cc
diff --git a/cc/test/layer_tree_test.cc b/cc/test/layer_tree_test.cc
index 2aab75cca9d38c0cfe57d27586c15e2f36149f6e..d21d43ebc261c7a025a3dc82f462c600b8a6e226 100644
--- a/cc/test/layer_tree_test.cc
+++ b/cc/test/layer_tree_test.cc
@@ -537,7 +537,6 @@ void LayerTreeTest::DoBeginTest() {
 void LayerTreeTest::SetupTree() {
   if (!layer_tree_host_->root_layer()) {
     scoped_refptr<Layer> root_layer = Layer::Create();
-    root_layer->SetAnchorPoint(gfx::PointF());
     root_layer->SetBounds(gfx::Size(1, 1));
     root_layer->SetIsDrawable(true);
     layer_tree_host_->SetRootLayer(root_layer);