chromeos: Add SurfaceServiceProvider.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 20f464dd964a61c1398d8ef4c4699f8db3499582..7669aabe589c663b27d0e77cc7e508e4d792aba4 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -49,6 +49,7 @@
 #include "ash/shell_factory.h"
 #include "ash/shell_init_params.h"
 #include "ash/shell_window_ids.h"
+#include "ash/surfaces/surface_controller.h"
 #include "ash/system/locale/locale_notification_controller.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray_delegate.h"
@@ -654,6 +655,7 @@ Shell::Shell(ShellDelegate* delegate, base::SequencedWorkerPool* blocking_pool)
   display_manager_.reset(new DisplayManager);
   window_tree_host_manager_.reset(new WindowTreeHostManager);
   user_metrics_recorder_.reset(new UserMetricsRecorder);
+  surface_controller_.reset(new SurfaceController);
 
 #if defined(OS_CHROMEOS)
   PowerStatus::Initialize();
@@ -793,6 +795,8 @@ Shell::~Shell() {
   power_button_controller_.reset();
   lock_state_controller_.reset();
 
+  surface_controller_.reset();
+
 #if defined(OS_CHROMEOS)
   resolution_notification_controller_.reset();
 #endif