Revert 235334 "Update V8 to version 3.23.5."

> Update V8 to version 3.23.5.
> 
> R=jkummerow@chromium.org
> TBR=jkummerow@chromium.org
> BUG=
> 
> Review URL: https://codereview.chromium.org/70103022

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/75443002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235746 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -49,7 +49,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.
-  "v8_revision": "17777",
+  "v8_revision": "17730",
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling WebRTC
   # and V8 without interference from each other.