Convert //ash from scoped_ptr to std::unique_ptr

ash/root_window_controller.cc

Index: ash/root_window_controller.cc
diff --git a/ash/root_window_controller.cc b/ash/root_window_controller.cc
index a2d8219fc72ff44a9f43147c2d3836b57e3d3122..837550605183be4a0337a37e1cd11a70ff1752d7 100644
--- a/ash/root_window_controller.cc
+++ b/ash/root_window_controller.cc
@@ -218,9 +218,9 @@ void SetUsesEasyResizeTargeter(aura::Window* container) {
                            -kResizeOutsideBoundsSize);
   gfx::Insets touch_extend = mouse_extend.Scale(
       kResizeOutsideBoundsScaleForTouch);
-  container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
-      new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
-                                         touch_extend)));
+  container->SetEventTargeter(
+      std::unique_ptr<ui::EventTargeter>(new ::wm::EasyResizeWindowTargeter(
+          container, mouse_extend, touch_extend)));
 }
 
 // A window delegate which does nothing. Used to create a window that
@@ -560,7 +560,7 @@ void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
                                            ui::MenuSourceType source_type) {
   ShellDelegate* delegate = Shell::GetInstance()->delegate();
   DCHECK(delegate);
-  scoped_ptr<ui::MenuModel> menu_model(
+  std::unique_ptr<ui::MenuModel> menu_model(
       delegate->CreateContextMenu(shelf_->shelf(), nullptr));
   if (!menu_model)
     return;
@@ -796,11 +796,9 @@ void RootWindowController::InitLayoutManagers() {
                            -kResizeOutsideBoundsSize);
   gfx::Insets touch_extend = mouse_extend.Scale(
       kResizeOutsideBoundsScaleForTouch);
-  panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
-      new AttachedPanelWindowTargeter(panel_container,
-                                      mouse_extend,
-                                      touch_extend,
-                                      panel_layout_manager_)));
+  panel_container->SetEventTargeter(
+      std::unique_ptr<ui::EventTargeter>(new AttachedPanelWindowTargeter(
+          panel_container, mouse_extend, touch_extend, panel_layout_manager_)));
 }
 
 void RootWindowController::InitTouchHuds() {