The current detection is thwarted by a redirect.
Created attachment 97550 [details]
Attachment 97550 [details] did not pass style-queue:
Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'LayoutTests/ChangeLog', u'LayoutTests/http..." exit_code: 1
Source/WebCore/loader/cache/CachedResourceLoader.cpp:202: Place brace on its own line for function definitions. [whitespace/braces] 
Total errors found: 1 in 6 files
If any of these errors are false positives, please file a bug against check-webkit-style.
Created attachment 97551 [details]
(Style nit fixed in 2nd patch)
Comment on attachment 97551 [details]
Attachment 97551 [details] did not pass mac-ews (mac):
Created attachment 97607 [details]
Fix Mac compile warning.
Comment on attachment 97607 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=97607&action=review
This isn't a complete solution, but it's a good step forward.
> +bool CachedResourceLoader::checkMixedContent(CachedResource::Type type, const KURL& url) const
I'd call this function checkInsecureContent to be consistent with the other terminology we're using.
Created attachment 97629 [details]
Fix function name.
Comment on attachment 97629 [details]
Clearing flags on attachment: 97629
Committed r89155: <http://trac.webkit.org/changeset/89155>
All reviewed patches have been landed. Closing bug.