CL 6822065 streamlined the login process by using a form. But if the form is submitted, the page is reloaded, which deletes the plugin instance, which closes the connection.
CL 6822065 streamlined the login process by using a form.
But if the form is submitted, the page is reloaded, which
deletes the plugin instance, which closes the connection.

This CL stops the form from being submitted.

BUG=none
TEST=Log in, and verify that the connection doesn't close after a few seconds.

Review URL: http://codereview.chromium.org/6869008

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@82092 0039d316-1c4b-4281-b951-d872f2087c98

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