Drop active support as a hard runtime depdendency. Still required for code generation however. #364

lib/google/apis/core/api_command.rb

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require 'active_support/inflector'
 require 'addressable/uri'
 require 'addressable/template'
 require 'google/apis/core/http_command'
@@ -127,7 +126,9 @@ module Google
         #   Updated header value
         def normalize_fields_param(fields)
           # TODO: Generate map of parameter names during code gen. Small possibility that camelization fails
-          fields.gsub(/:/, '').gsub(/\w+/) { |str| ActiveSupport::Inflector.camelize(str, false) }
+          fields.gsub(/:/, '').gsub(/\w+/) do |str|
+            str.gsub(/(?:^|_)([a-z])/){ Regexp.last_match.begin(0) == 0 ? $1 : $1.upcase }
+          end
         end
       end
     end