Convert Pass()→std::move() in //ash

ash/host/ash_window_tree_host_unified.cc

 // Copyright 2015 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_unified.h"
+
+#include <utility>
+
 #include "ash/host/root_window_transformer.h"
 #include "ash/ime/input_method_event_handler.h"
 #include "base/logging.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_targeter.h"
 #include "ui/compositor/compositor.h"
 #include "ui/events/event_processor.h"
 #include "ui/events/null_event_targeter.h"
 #include "ui/gfx/geometry/insets.h"
@@ skipping 68 matching lines @@
 
 bool AshWindowTreeHostUnified::ConfineCursorToRootWindow() {
   return true;
 }
 
 void AshWindowTreeHostUnified::UnConfineCursor() {
 }
 
 void AshWindowTreeHostUnified::SetRootWindowTransformer(
     scoped_ptr<RootWindowTransformer> transformer) {
-  transformer_helper_.SetRootWindowTransformer(transformer.Pass());
+  transformer_helper_.SetRootWindowTransformer(std::move(transformer));
 }
 
 gfx::Insets AshWindowTreeHostUnified::GetHostInsets() const {
   return transformer_helper_.GetHostInsets();
 }
 
 aura::WindowTreeHost* AshWindowTreeHostUnified::AsWindowTreeHost() {
   return this;
 }
 
@@ skipping 77 matching lines @@
     ui::KeyEvent* event) {
   input_method_handler()->SetPostIME(true);
   ui::EventDispatchDetails details =
       event_processor()->OnEventFromSource(event);
   if (!details.dispatcher_destroyed)
     input_method_handler()->SetPostIME(false);
   return details;
 }
 
 }  // namespace ash