Use to base::checked_cast.

components/cloud_devices/description_items_inl.h

Index: components/cloud_devices/description_items_inl.h
diff --git a/components/cloud_devices/description_items_inl.h b/components/cloud_devices/description_items_inl.h
index 2d7b86ae156fb199b3ca14c2073ca631e7a40bb4..5866807f2ea0610f80e489e305d288c7e22e1d9b 100644
--- a/components/cloud_devices/description_items_inl.h
+++ b/components/cloud_devices/description_items_inl.h
@@ -7,6 +7,7 @@
 
 #include <vector>
 
+#include "base/numerics/safe_conversions.h"
 #include "components/cloud_devices/description_items.h"
 
 // Implementation of templates defined in header file.
@@ -83,7 +84,7 @@ bool SelectionCapability<Option, Traits>::IsValid() const {
     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>
@@ -124,7 +125,7 @@ void SelectionCapability<Option, Traits>::SaveTo(
   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);
   }