Update V8 to version 3.30.31 (based on a27c77221e8458e2347f858428df793a24aa7b4d).

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/693433004

Cr-Commit-Position: refs/heads/master@{#302604}

DEPS

@@ -49,7 +49,7 @@ vars = {
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.
   'v8_branch': 'trunk',
-  'v8_revision': 'e1b4ab6408e609fecb22738da9703f9073a66099', # from svn revision 25089
+  'v8_revision': '11b7b24c91c903ee08b2b6b94f0bbb17b966dd92', # from svn revision 25090
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling WebRTC
   # and V8 without interference from each other.