Convert Pass()→std::move() in //ash

ash/host/ash_window_tree_host_x11.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_x11.h"
 
-#include <X11/extensions/Xfixes.h>
-#include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
-
+#include <X11/extensions/XInput2.h>
+#include <X11/extensions/Xfixes.h>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/host/ash_window_tree_host_unified.h"
 #include "ash/host/root_window_transformer.h"
 #include "ash/ime/input_method_event_handler.h"
 #include "base/sys_info.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
@@ skipping 82 matching lines @@
     XFixesDestroyPointerBarrier(xdisplay(), pointer_barriers_[1]);
     XFixesDestroyPointerBarrier(xdisplay(), pointer_barriers_[2]);
     XFixesDestroyPointerBarrier(xdisplay(), pointer_barriers_[3]);
     pointer_barriers_.reset();
   }
 #endif
 }
 
 void AshWindowTreeHostX11::SetRootWindowTransformer(
     scoped_ptr<RootWindowTransformer> transformer) {
-  transformer_helper_.SetRootWindowTransformer(transformer.Pass());
+  transformer_helper_.SetRootWindowTransformer(std::move(transformer));
   if (pointer_barriers_) {
     UnConfineCursor();
     ConfineCursorToRootWindow();
   }
 }
 
 gfx::Insets AshWindowTreeHostX11::GetHostInsets() const {
   return transformer_helper_.GetHostInsets();
 }
 
@@ skipping 165 matching lines @@
 #endif
 
 AshWindowTreeHost* AshWindowTreeHost::Create(
     const AshWindowTreeHostInitParams& init_params) {
   if (init_params.offscreen)
     return new AshWindowTreeHostUnified(init_params.initial_bounds);
   return new AshWindowTreeHostX11(init_params.initial_bounds);
 }
 
 }  // namespace ash