This KB is relevant to users on versions 9.0 and above.
As of 10/15/2014, you cannot use the iOS Google Chrome app with SSL Decryption. According to Google, the Chrome app for iOS is unable to adequately access the Apple iOS Keystore that holds the private self-signed certificate used in SSL Decryption. This results in users of the iOS Chrome app encountering browser warning messages stating that the certificate is not trusted whenever a user attempts to navigate the web. As of this writing, Google is maintaining the position that it cannot change this behavior without compromising security standards in the iOS Chrome browser.
For more information, please see the following links at Google: