Security update for Chromium (important)

Chromium was updated to 51.0.2704.63 to fix the following vulnerabilities
(boo#981886):

• CVE-2016-1672: Cross-origin bypass in extension bindings
• CVE-2016-1673: Cross-origin bypass in Blink
• CVE-2016-1674: Cross-origin bypass in extensions
• CVE-2016-1675: Cross-origin bypass in Blink
• CVE-2016-1676: Cross-origin bypass in extension bindings
• CVE-2016-1677: Type confusion in V8
• CVE-2016-1678: Heap overflow in V8
• CVE-2016-1679: Heap use-after-free in V8 bindings
• CVE-2016-1680: Heap use-after-free in Skia
• CVE-2016-1681: Heap overflow in PDFium
• CVE-2016-1682: CSP bypass for ServiceWorker
• CVE-2016-1683: Out-of-bounds access in libxslt
• CVE-2016-1684: Integer overflow in libxslt
• CVE-2016-1685: Out-of-bounds read in PDFium
• CVE-2016-1686: Out-of-bounds read in PDFium
• CVE-2016-1687: Information leak in extensions
• CVE-2016-1688: Out-of-bounds read in V8
• CVE-2016-1689: Heap buffer overflow in media
• CVE-2016-1690: Heap use-after-free in Autofill
• CVE-2016-1691: Heap buffer-overflow in Skia
• CVE-2016-1692: Limited cross-origin bypass in ServiceWorker
• CVE-2016-1693: HTTP Download of Software Removal Tool
• CVE-2016-1694: HPKP pins removed on cache clearance
• CVE-2016-1695: Various fixes from internal audits, fuzzing and other
  initiatives