Allow POST method when converting file protocol to http protocol for layout tests.

Allow POST method when converting file protocol to http protocol for layout tests.

When running layout tests on Android, we host test files on a Linux/Mac machine, convert file requests to http requests, and forward http requests from Android to the same port on the host machine.

The following tests use POST method and failed at  DCHECK(params->method == "GET" || params->method.empty()):
 fast/events/popup-allowed-from-gesture-initiated-form-submit.html
 fast/forms/document-write.html
 fast/forms/form-and-frame-interaction-retains-values.html
 fast/forms/form-data-encoding-normalization-overrun.html
 fast/forms/form-post-urlencoded.html
 fast/forms/formmethod-attribute-button-html.html
 fast/forms/formmethod-attribute-input-html.html
 fast/forms/submit-to-url-fragment.html
 fast/forms/xss-auditor-doesnt-crash-on-post-submit.html
 fast/history/form-submit-in-frame-via-onclick.html
 fast/history/form-submit-in-frame.html
 fast/loader/form-submission-after-beforeunload-cancel.html
 fast/loader/form-submit-aborts-parsing.html
 fast/loader/submit-form-while-parsing-1.xhtml

The following test loads an image referred by the test page, and failed at DCHECK(params->referrer.is_empty()):
 http/tests/security/local-image-from-remote-whitelisted.html

BUG=http://b/5655809

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=111342

[Jing Zhao, 2011-11-22 08:04:10]

Hi Tony,

Could you help to review this change?

Thanks,
Jing

[tony, 2011-11-22 17:24:32]

The change seems OK, but can you update the change description to explain why
you are doing this?  Which layout test will this fix?

Also, please set BUG=None, TEST=None or remove the lines.

[tony, 2011-11-23 07:55:33]

LGTM.  I would add BUG=http://b/5655809 to the change description.  It's not a
secret that there's an internal bug tracker :)

[commit-bot: I haz the power, 2011-11-23 09:10:14]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jingzhao@chromium.org/8632006/1

[commit-bot: I haz the power, 2011-11-23 10:12:04]

Change committed as 111342