[Ozone] Fix setting the transform on the AshWindowTreeHost

ash/host/ash_window_tree_host_ozone.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/host/ash_window_tree_host.h"
 
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/host/root_window_transformer.h"
 #include "ash/host/transformer_helper.h"
 #include "base/command_line.h"
@@ skipping 54 matching lines @@
 
 gfx::Insets AshWindowTreeHostOzone::GetHostInsets() const {
   return transformer_helper_.GetHostInsets();
 }
 
 aura::WindowTreeHost* AshWindowTreeHostOzone::AsWindowTreeHost() {
   return this;
 }
 
 void AshWindowTreeHostOzone::SetRootTransform(const gfx::Transform& transform) {
-  transformer_helper_.GetTransform();
+  transformer_helper_.SetTransform(transform);
 }
 
 gfx::Transform AshWindowTreeHostOzone::GetRootTransform() const {
   return transformer_helper_.GetTransform();
 }
 
 gfx::Transform AshWindowTreeHostOzone::GetInverseRootTransform() const {
   return transformer_helper_.GetInverseTransform();
 }
 
 void AshWindowTreeHostOzone::UpdateRootWindowSize(const gfx::Size& host_size) {
   transformer_helper_.UpdateWindowSize(host_size);
 }
 
 }  // namespace
 
 AshWindowTreeHost* AshWindowTreeHost::Create(
     const AshWindowTreeHostInitParams& init_params) {
   return new AshWindowTreeHostOzone(init_params.initial_bounds);
 }
 
 }  // namespace ash