Revert r174494 "Delay updating jumplist to avoid blocking the file thread at start-up"

This broke browser_tests on win_rel. Please see the tryjob results in original CL.

TBR=caitkp@chromium.org
BUG=160500
TEST=none

Review URL: https://codereview.chromium.org/11659021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@174500 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed