[rb] fix complexity in options for rubocop

rb/.rubocop.yml

@@ -64,7 +64,6 @@ Metrics/ClassLength:
 Metrics/CyclomaticComplexity:
   Max: 9
   Exclude:
-    - 'lib/selenium/webdriver/remote/capabilities.rb'
     - 'lib/selenium/webdriver/support/color.rb'
 
 Metrics/MethodLength:
@@ -84,11 +83,8 @@ Metrics/ModuleLength:
 Metrics/ParameterLists:
   CountKeywordArgs: false
 
-# TODO: Refactor Chrome::Bridge#create_capabilities
 Metrics/PerceivedComplexity:
-  Max: 10
-  Exclude:
-    - 'lib/selenium/webdriver/remote/capabilities.rb'
+  Max: 9
 
 Naming/FileName:
   Exclude:

rb/lib/selenium/webdriver/common/options.rb

@@ -134,13 +134,7 @@ def camelize?(_key)
 
       def generate_as_json(value, camelize_keys: true)
         if value.is_a?(Hash)
-          value.each_with_object({}) do |(key, val), hash|
-            next if val.respond_to?(:empty?) && val.empty?
-
-            camelize = camelize_keys ? camelize?(key) : false
-            key = convert_json_key(key, camelize: camelize)
-            hash[key] = generate_as_json(val, camelize_keys: camelize)
-          end
+          process_json_hash(value, camelize_keys)
         elsif value.respond_to?(:as_json)
           value.as_json
         elsif value.is_a?(Array)
@@ -152,6 +146,16 @@ def generate_as_json(value, camelize_keys: true)
         end
       end
 
+      def process_json_hash(value, camelize_keys)
+        value.each_with_object({}) do |(key, val), hash|
+          next if val.respond_to?(:empty?) && val.empty?
+
+          camelize = camelize_keys ? camelize?(key) : false
+          key = convert_json_key(key, camelize: camelize)
+          hash[key] = generate_as_json(val, camelize_keys: camelize)
+        end
+      end
+
       def convert_json_key(key, camelize: true)
         key = key.to_s if key.is_a?(Symbol)
         key = camel_case(key) if camelize