Convert Pass()→std::move() for CrOS extension code.

chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.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 "chrome/browser/extensions/api/virtual_keyboard_private/chrome_virtual_keyboard_delegate.h"
 
 #include <string>
+#include <utility>
 
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/user_metrics_action.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/chrome_pages.h"
@@ skipping 62 matching lines @@
   features->AppendString(GenerateFeatureFlag(
       "floatingvirtualkeyboard", keyboard::IsFloatingVirtualKeyboardEnabled()));
   features->AppendString(
       GenerateFeatureFlag("gesturetyping", keyboard::IsGestureTypingEnabled()));
   features->AppendString(GenerateFeatureFlag(
       "gestureediting", keyboard::IsGestureEditingEnabled()));
   features->AppendString(
       GenerateFeatureFlag("voiceinput", keyboard::IsVoiceInputEnabled()));
   features->AppendString(GenerateFeatureFlag("experimental",
       keyboard::IsExperimentalInputViewEnabled()));
-  results->Set("features", features.Pass());
+  results->Set("features", std::move(features));
   return true;
 }
 
 bool ChromeVirtualKeyboardDelegate::HideKeyboard() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   keyboard::KeyboardController* controller =
       keyboard::KeyboardController::GetInstance();
   if (!controller)
     return false;
 
@@ skipping 94 matching lines @@
 }
 
 bool ChromeVirtualKeyboardDelegate::IsLanguageSettingsEnabled() {
   return (user_manager::UserManager::Get()->IsUserLoggedIn() &&
           !chromeos::UserAddingScreen::Get()->IsRunning() &&
           !(chromeos::ScreenLocker::default_screen_locker() &&
             chromeos::ScreenLocker::default_screen_locker()->locked()));
 }
 
 }  // namespace extensions