Update V8 to version 3.23.1.

TBR=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/66283003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233920 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233921 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233920
ios: Remove -Wno-unnamed-type-template-args.

Unnamed type template args are fine in C++11, there's no need for this flag.
Mac removed it a while ago.

BUG=none
NOTRY=true

Review URL: https://codereview.chromium.org/63183005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233922 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233921
SVN changes up to revision 233922