Use to base::checked_cast.

components/cloud_devices/description_items_inl.h

 // 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.
 
 #ifndef COMPONENTS_CLOUD_DEVICES_DESCRIPTION_DESCRIPTION_ITEMS_INL_H_
 #define COMPONENTS_CLOUD_DEVICES_DESCRIPTION_DESCRIPTION_ITEMS_INL_H_
 
 #include <vector>
 
+#include "base/numerics/safe_conversions.h"
 #include "components/cloud_devices/description_items.h"
 
 // Implementation of templates defined in header file.
 // This file should be included from CC file with implementation of device
 // specific capabilities.
 
 namespace cloud_devices {
 
 template <class Option, class Traits>
 ListCapability<Option, Traits>::ListCapability() {
@@ skipping 56 matching lines @@
 SelectionCapability<Option, Traits>::~SelectionCapability() { }
 
 template <class Option, class Traits>
 bool SelectionCapability<Option, Traits>::IsValid() const {
   if (empty())
     return false;  // This type of capabilities can't be empty
   for (size_t i = 0; i < options_.size(); ++i) {
     if (!Traits::IsValid(options_[i]))
       return false;
   }
-  return default_idx_ >= 0 && default_idx_ < static_cast<int>(size());
+  return default_idx_ >= 0 && default_idx_ < base::checked_cast<int>(size());
 }
 
 template <class Option, class Traits>
 bool SelectionCapability<Option, Traits>::LoadFrom(
     const CloudDeviceDescription& description) {
   Reset();
   const base::DictionaryValue* item =
       description.GetItem(Traits::GetCapabilityPath());
   if (!item)
     return false;
@@ skipping 20 matching lines @@
 template <class Option, class Traits>
 void SelectionCapability<Option, Traits>::SaveTo(
     CloudDeviceDescription* description) const {
   DCHECK(IsValid());
   base::ListValue* options_list = new base::ListValue;
   description->CreateItem(Traits::GetCapabilityPath())->Set(json::kKeyOption,
                                                             options_list);
   for (size_t i = 0; i < options_.size(); ++i) {
     base::DictionaryValue* option_value = new base::DictionaryValue;
     options_list->Append(option_value);
-    if (static_cast<int>(i) == default_idx_)
+    if (base::checked_cast<int>(i) == default_idx_)
       option_value->SetBoolean(json::kKeyIsDefault, true);
     Traits::Save(options_[i], option_value);
   }
 }
 
 template <class Traits>
 BooleanCapability<Traits>::BooleanCapability() {
   Reset();
 }
 
@@ skipping 65 matching lines @@
 template <class Option, class Traits>
 void TicketItem<Option, Traits>::SaveTo(
     CloudDeviceDescription* description) const {
   DCHECK(IsValid());
   Traits::Save(value(), description->CreateItem(Traits::GetTicketItemPath()));
 }
 
 }  // namespace cloud_devices
 
 #endif  // COMPONENTS_CLOUD_DEVICES_DESCRIPTION_DESCRIPTION_ITEMS_INL_H_