Prevent Chrome from prompting to save password from input box?

Question

Chrome was recently updated with an annoying popup that comes down from an icon in the address bar and prompts to save a password on the page when the user submits the form. There's no other input box on this page, and no other browser prompts to save this password, so I don't know why Chrome does. It is a password, therefore it shouldn't be visible as plain text in the input box, but it's not a password that should ever be saved - it's not login credentials. It's actually quite important the user of the computer does not know this password - someone else must enter it in for them - so if the browser saves it that would be bad.

How can you prevent Chrome (and all browsers) from prompting to save this password?

<form action="/..." method="post" onsubmit="return pwFormIsSubmittable();">
    <p>Password: <input autofocus="" type="password" name="1409_password" style="width:100px" tabindex="1" autocomplete="off"></p>
    <div class="tabSubmitButtons">
        <input type="button" name="event=default" value="Cancel" onclick="window.location='...'" tabindex="3">");
        <input type="submit" value="Submit" onclick="submitForm();" tabindex="2">
        <input type="hidden" name="begin" value="Yes">
        <!-- couple other hidden inputs -->
    </div>
</form>

Answer 1

One solution or workaround is to add <input type="password" style="display:none"/> above the real password input box. Chrome only tries to save the first password it finds and if it's blank it won't throw up the dialog to save it.