Convert Pass()→std::move() in //ash (CrOS edition)

ash/accelerators/key_hold_detector.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/accelerators/key_hold_detector.h"
 
+#include <utility>
+
 #include "ash/shell.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/aura/window_tracker.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/events/event_dispatcher.h"
 #include "ui/events/event_processor.h"
 
 namespace ash {
 namespace {
 
@@ skipping 19 matching lines @@
   tracker->Add(static_cast<aura::Window*>(event->target()));
 
   base::MessageLoopForUI::current()->PostTask(
       FROM_HERE,
       base::Bind(&DispatchPressedEvent, pressed_event, base::Passed(&tracker)));
 }
 
 }  // namespace
 
 KeyHoldDetector::KeyHoldDetector(scoped_ptr<Delegate> delegate)
-    : state_(INITIAL),
-      delegate_(delegate.Pass()) {}
+    : state_(INITIAL), delegate_(std::move(delegate)) {}
 
 KeyHoldDetector::~KeyHoldDetector() {}
 
 void KeyHoldDetector::OnKeyEvent(ui::KeyEvent* event) {
   if (!delegate_->ShouldProcessEvent(event))
     return;
 
   if (delegate_->IsStartEvent(event)) {
     switch (state_) {
       case INITIAL:
@@ skipping 34 matching lines @@
         if (delegate_->ShouldStopEventPropagation())
           event->StopPropagation();
         break;
       }
     }
     state_ = INITIAL;
   }
 }
 
 }  // namespace ash