# File lib/selenium/webdriver/common/window.rb, line 24
      def size=(dimension)
        unless dimension.respond_to?(:width) && dimension.respond_to?(:height)
          raise ArgumentError, "expected #{dimension.inspect}:#{dimension.class}" +
                                " to respond to #width and #height"
        end

        @bridge.setWindowSize dimension.width, dimension.height
      end