chromium -- multiple vulnerabilities

Chrome Releases reports:

51 security fixes in this release, including:

[456516] High CVE-2015-1212: Out-of-bounds write in media.
Credit to anonymous.
[448423] High CVE-2015-1213: Out-of-bounds write in skia
filters. Credit to cloudfuzzer.
[445810] High CVE-2015-1214: Out-of-bounds write in skia
filters. Credit to cloudfuzzer.
[445809] High CVE-2015-1215: Out-of-bounds write in skia
filters. Credit to cloudfuzzer.
[454954] High CVE-2015-1216: Use-after-free in v8 bindings.
Credit to anonymous.
[456192] High CVE-2015-1217: Type confusion in v8 bindings.
Credit to anonymous.
[456059] High CVE-2015-1218: Use-after-free in dom.
Credit to cloudfuzzer.
[446164] High CVE-2015-1219: Integer overflow in webgl.
Credit to Chen Zhang (demi6od) of NSFOCUS Security Team.
[437651] High CVE-2015-1220: Use-after-free in gif decoder.
Credit to Aki Helin of OUSPG.
[455368] High CVE-2015-1221: Use-after-free in web databases.
Credit to Collin Payne.
[448082] High CVE-2015-1222: Use-after-free in service workers.
Credit to Collin Payne.
[454231] High CVE-2015-1223: Use-after-free in dom.
Credit to Maksymillian Motyl.
High CVE-2015-1230: Type confusion in v8.
Credit to Skylined working with HP’s Zero Day Initiative.
[449958] Medium CVE-2015-1224: Out-of-bounds read in vpxdecoder.
Credit to Aki Helin of OUSPG.
[446033] Medium CVE-2015-1225: Out-of-bounds read in pdfium.
Credit to cloudfuzzer.
[456841] Medium CVE-2015-1226: Validation issue in debugger.
Credit to Rob Wu.
[450389] Medium CVE-2015-1227: Uninitialized value in blink.
Credit to Christoph Diehl.
[444707] Medium CVE-2015-1228: Uninitialized value in rendering.
Credit to miaubiz.
[431504] Medium CVE-2015-1229: Cookie injection via proxies.
Credit to iliwoy.
[463349] CVE-2015-1231: Various fixes from internal audits,
fuzzing, and other initiatives.