Revert of Update V8 to version 5.1.79. (patchset chromium#1 id:1 of h…

…ttps://codereview.chromium.org/1779563002/ )

Reason for revert:
Seems to have broken the build: https://build.chromium.org/p/chromium.linux/builders/Android%20Clang%20Builder%20%28dbg%29/builds/76436

Original issue's description:
> Update V8 to version 5.1.79.
>
> Summary of changes available at:
> https://chromium.googlesource.com/v8/v8/+log/44a72294..c5f086b2
>
> Please follow these instructions for assigning/CC'ing issues:
> https://github.com/v8/v8/wiki/Triaging%20issues
>
> Please close rolling in case of a roll revert:
> https://v8-roll.appspot.com/
> This only works with a Google account.
>
> TBR=hablich@chromium.org,machenbach@chromium.org,yangguo@chromium.org,vogelheim@chromium.org
>
> Committed: https://crrev.com/15ab7da28b3d2e6391f58dda69b3407b4d207778
> Cr-Commit-Position: refs/heads/master@{#379946}

TBR=hablich@chromium.org,machenbach@chromium.org,vogelheim@chromium.org,yangguo@chromium.org,v8-autoroll@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1778503003

Cr-Commit-Position: refs/heads/master@{#379965}

DEPS

@@ -43,7 +43,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'c5f086b2e953bb33f42c620dfaff12024fe8b06a',
+  'v8_revision': '44a72294c4969e4805d49d5b7cb0e746a41b3b7c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.