"chromeframe" should be added as an alias for "MSIE" in IE fixes (fix_IE_for_attach, fix_IE_for_vary)
Chromeframe is an extension for Internet Explorer allowing it to use Google Chrome to process and render the requests and responses of the client. In recent versions chromeframe has stopped identifying itself as an Internet Explorer (with the 'MSIE' token), and it now identifies itself as a Chrome browser. Example:
# Then
User-Agent : Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; GTB6.4; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.30729; .NET CLR 3.5.30729) chromeframe/5.0.366.4
# Now
User-Agent : Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.224 Safari/534.10 chromeframe/8.0.552.224
However the IE quirks fix_IE_for_attach and fix_IE_for_vary was implemented to fix is still present.
I recommend 'chromeframe' is added as an "alias" to 'MSIE' when applying these fixes to the response. I have attached a patch for this.
(In [15340]) Fixed #15046 -- Added "CHROMEFRAME" as a user agent alias for various MSIE fixes. Thanks to chrj for the report and patch.