Updated chromium-browser-stable package fixes multiple vulnerabilities

Use-after-free related to forms CVE-2013-6641. Unprompted sync with an attackers Google account CVE-2013-6643. Various fixes from internal audits, fuzzing and other initiatives CVE-2013-6644. Use-after-free related to speech input elements CVE-2013-6645. Use-after-free in web workers CVE-2013-664...