chromeos: moves setting of touch state to a separate class

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 8aa43b908db3b85648f97aa2a5bbf2e1829f5766..864802ad9feef8bb842d6f78656bb4b725c3c1fb 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -153,6 +153,7 @@
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/display/display.h"
+#include "ui/display/manager/chromeos/default_touch_transform_setter.h"
 #include "ui/display/manager/chromeos/display_change_observer.h"
 #include "ui/display/manager/chromeos/display_configurator.h"
 #include "ui/display/manager/display_manager.h"
@@ -1059,7 +1060,8 @@ void Shell::Init(const ShellInitParams& init_params) {
   // TODO(sky): needs to to work for mus too.
   if (config == Config::CLASSIC) {
     touch_transformer_controller_.reset(new AshTouchTransformController(
-        display_configurator_.get(), display_manager_.get()));
+        display_configurator_.get(), display_manager_.get(),
+        base::MakeUnique<display::DefaultTouchTransformSetter>()));
   }
 
   keyboard_ui_ = shell_port_->CreateKeyboardUI();