Update V8 to version 3.24.6.

TBR=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/119733005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242217 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242218 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242218