Revert of https://codereview.chromium.org/111603005/
Reason for revert: Sorry - but this was showing another problem: The profile is in progress to be loaded and the event rewriter is accessing the profile too fast. Since that fix will take longer I revert this. (should say that the crash rate is ~70%)

TBR=derat@chromium.org,xiyuan@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/114623003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240512 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240512