[Extensions Bindings] Add support for maximum integers

extensions/renderer/argument_spec.h

 // Copyright 2016 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 EXTENSIONS_RENDERER_ARGUMENT_SPEC_H_
 #define EXTENSIONS_RENDERER_ARGUMENT_SPEC_H_
 
 #include <map>
 #include <memory>
 #include <set>
@@ skipping 113 matching lines @@
 
   // The reference the argument points to, if any. Note that if this is set,
   // none of the following fields describing the argument will be.
   base::Optional<std::string> ref_;
 
   // The type of instance an object should be, if any. Only applicable for
   // ArgumentType::OBJECT. If specified, the argument must contain the instance
   // type in its prototype chain.
   base::Optional<std::string> instance_of_;
 
-  // A minimum, if any.
+  // A minimum and maximum for integer and double values, if any.
   base::Optional<int> minimum_;
+  base::Optional<int> maximum_;
 
   // A minimium length for strings or arrays.
   base::Optional<size_t> min_length_;
 
   // A maximum length for strings or arrays.
   base::Optional<size_t> max_length_;
 
   // A map of required properties; present only for objects. Note that any
   // properties *not* defined in this map will be dropped during conversion.
   std::map<std::string, std::unique_ptr<ArgumentSpec>> properties_;
@@ skipping 12 matching lines @@
   // to allow the API to pass an object with arbitrary properties. Only
   // applicable for ArgumentType::OBJECT.
   std::unique_ptr<ArgumentSpec> additional_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(ArgumentSpec);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_ARGUMENT_SPEC_H_