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

base/prefs/pref_value_map.cc

 // Copyright (c) 2011 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/prefs/pref_value_map.h"
 
 #include <map>
+#include <utility>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
 #include "base/values.h"
 
 PrefValueMap::PrefValueMap() {}
 
 PrefValueMap::~PrefValueMap() {}
 
@@ skipping 15 matching lines @@
 }
 
 bool PrefValueMap::SetValue(const std::string& key,
                             scoped_ptr<base::Value> value) {
   DCHECK(value);
 
   base::Value* old_value = prefs_.get(key);
   if (old_value && value->Equals(old_value))
     return false;
 
-  prefs_.set(key, value.Pass());
+  prefs_.set(key, std::move(value));
   return true;
 }
 
 bool PrefValueMap::RemoveValue(const std::string& key) {
   return prefs_.erase(key) != 0;
 }
 
 void PrefValueMap::Clear() {
   prefs_.clear();
 }
@@ skipping 80 matching lines @@
       ++other_pref;
     }
   }
 
   // Add the remaining entries.
   for ( ; this_pref != this_prefs.end(); ++this_pref)
       differing_keys->push_back(this_pref->first);
   for ( ; other_pref != other_prefs.end(); ++other_pref)
       differing_keys->push_back(other_pref->first);
 }