base: Use std::move() instead of Pass() for real movable types.

base/move_unittest.cc

 // Copyright (c) 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 "base/move.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 class MoveOnly {
   MOVE_ONLY_TYPE_WITH_MOVE_CONSTRUCTOR_FOR_CPP_03(MoveOnly)
 
  public:
   MoveOnly() {}
 
   MoveOnly(MoveOnly&& other) {}
   MoveOnly& operator=(MoveOnly&& other) { return *this; }
 };
 
 class Container {
  public:
   Container() = default;
   Container(const Container& other) = default;
   Container& operator=(const Container& other) = default;
 
-  Container(Container&& other) { value_ = other.value_.Pass(); }
+  Container(Container&& other) { value_ = std::move(other.value_); }
 
   Container& operator=(Container&& other) {
     value_ = other.value_.Pass();
     return *this;
   }
 
  private:
   MoveOnly value_;
 };
 
 Container GetContainerRvalue() {
   Container x;
   return x;
 }
 
 TEST(MoveTest, CopyableContainerCanBeMoved) {
   // Container should be move-constructible and move-assignable.
   Container y = GetContainerRvalue();
   y = GetContainerRvalue();
 }
 
 }  // namespace