Mojo C++ bindings: switch services/ui/public/interfaces mojom target to use STL types.

services/ui/public/cpp/tests/window_tree_client_unittest.cc

Index: services/ui/public/cpp/tests/window_tree_client_unittest.cc
diff --git a/services/ui/public/cpp/tests/window_tree_client_unittest.cc b/services/ui/public/cpp/tests/window_tree_client_unittest.cc
index 855ad7f1d3548fb016a743be17a45e42a9c6b1ea..2b899c411c2ee5c29ce36f25f911d72211de3810 100644
--- a/services/ui/public/cpp/tests/window_tree_client_unittest.cc
+++ b/services/ui/public/cpp/tests/window_tree_client_unittest.cc
@@ -40,13 +40,8 @@ Id server_id(ui::Window* window) {
 
 }  // namespace
 
-mojo::Array<uint8_t> Int32ToPropertyTransportValue(int32_t value) {
-  const std::vector<uint8_t> bytes =
-      mojo::ConvertTo<std::vector<uint8_t>>(value);
-  mojo::Array<uint8_t> transport_value;
-  transport_value.resize(bytes.size());
-  memcpy(&transport_value.front(), &(bytes.front()), bytes.size());
-  return transport_value;
+std::vector<uint8_t> Int32ToPropertyTransportValue(int32_t value) {
+  return mojo::ConvertTo<std::vector<uint8_t>>(value);
 }
 
 class TestWindowTreeClientDelegate : public WindowTreeClientDelegate {
@@ -779,8 +774,10 @@ TEST_F(WindowTreeClientTest, NewTopLevelWindowGetsAllChangesInFlight) {
   data->window_id = server_id(root2);
   data->bounds.SetRect(1, 2, 3, 4);
   data->visible = true;
-  data->properties["xx"] = mojo::Array<uint8_t>::From(std::string("server_xx"));
-  data->properties["yy"] = mojo::Array<uint8_t>::From(std::string("server_yy"));
+  data->properties["xx"] =
+      mojo::Array<uint8_t>::From(std::string("server_xx")).PassStorage();
+  data->properties["yy"] =
+      mojo::Array<uint8_t>::From(std::string("server_yy")).PassStorage();
   const int64_t display_id = 1;
   setup.window_tree_client()->OnTopLevelCreated(
       new_window_in_flight_change_id, std::move(data), display_id, true);