Mixed Content: Re-allow non-webby URLs in IFrames.

Mixed Content: Re-allow non-webby URLs in IFrames.

We settled on this compromise in https://src.chromium.org/viewvc/blink?revision=178148&view=revision
and it regressed sometime between then and now. I've added a layout test
(which I should have done in the first place) to ensure that doesn't
happen again.

This CL also changes the test driver to accept '.https.html' as an
HTTPS-by-default toggle. This is a nice addition to the existing functionality
that doesn't force us to put HTTPS-by-default tests into a separate directory.

BUG=422213, 318788
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=184265

[Mike West, 2014-10-17 11:19:12]

mkwst@chromium.org changed reviewers:
+ jochen@chromium.org

[Mike West, 2014-10-17 13:30:08]

Mind taking a look?

[jochen (gone - plz use gerrit), 2014-10-20 13:28:32]

lgtm

https://codereview.chromium.org/657353002/diff/1/LayoutTests/http/tests/secur...
File
LayoutTests/http/tests/security/mixedContent/nonwebby-scheme-in-iframe-allowed.https.html
(right):

https://codereview.chromium.org/657353002/diff/1/LayoutTests/http/tests/secur...
LayoutTests/http/tests/security/mixedContent/nonwebby-scheme-in-iframe-allowed.https.html:5:
This tests that non-webby URLs are not blocked as mixed content. The test passes
if a mixed
nit. 4 spaces indent

https://codereview.chromium.org/657353002/diff/1/LayoutTests/http/tests/secur...
LayoutTests/http/tests/security/mixedContent/nonwebby-scheme-in-iframe-allowed.https.html:16:
<iframe
src="nonwebbyscheme://this-will-fail-but-no-mixed-content-warning-should-appear"></iframe>
*-error-*

[Mike West, 2014-10-23 11:09:20]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-10-23 11:09:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/657353002/20001

[commit-bot: I haz the power, 2014-10-23 13:08:22]

Committed patchset #2 (id:20001) as 184265