cc: Remove ScopedPtrVector and cc::remove_if.

cc/test/fake_layer_tree_host_impl.cc

Index: cc/test/fake_layer_tree_host_impl.cc
diff --git a/cc/test/fake_layer_tree_host_impl.cc b/cc/test/fake_layer_tree_host_impl.cc
index 56a93cd48e4289a2b5068f1c5c90a2c8b0b38b0c..3bf9b04070a46a41347646b80cdca65edc708e5e 100644
--- a/cc/test/fake_layer_tree_host_impl.cc
+++ b/cc/test/fake_layer_tree_host_impl.cc
@@ -78,7 +78,7 @@ int FakeLayerTreeHostImpl::RecursiveUpdateNumChildren(LayerImpl* layer) {
   int num_children_that_draw_content = 0;
   for (size_t i = 0; i < layer->children().size(); ++i) {
     num_children_that_draw_content +=
-        RecursiveUpdateNumChildren(layer->children()[i]);
+        RecursiveUpdateNumChildren(layer->children()[i].get());
   }
   if (layer->DrawsContent() && layer->HasDelegatedContent())
     num_children_that_draw_content += 1000;