on run

    #
    # {{w, h}, {x, y}}
    #
    set a to "{{500, 800}, {0, 22}}"
    set b to "{{500, 400}, {500, 22}}"
    set c to "{{500, 400}, {500, 422}}"
    set d to "{{500, 400}, {1000, 22}}"
    set x to "{{false, false}, {false, false}}"

    set ary to {a, b, c, d, x}

    tell application "System Events"
        set pids to id of processes whose frontmost is true and name is "Google Chrome"

        if length of pids is 0 then
            return
        end if

        set pid to item 1 of pids

        tell process id pid
            tell item 1 of (windows whose subrole is "AXStandardWindow")
                set {{w, h}, {x, y}} to my set_size_and_position(ary)

                if w is false then
                    return
                end if

                set size to {w, h}
                set position to {x, y}
            end tell
        end tell
    end tell
end run

on set_size_and_position(ary)
    tell application "System Events"
        activate

        set res to choose from list ary

        if res is false then
            error number -128
        end if

        return run script (item 1 of res)
    end tell
end set_size_and_position