Remove a performance trace that seems to have caused a perf regression on XP, presumably because initializing ETW on Windows XP is somewhat expensive.
Remove a performance trace that seems to have caused a perf regression on XP, presumably because initializing ETW on Windows XP is somewhat expensive.

BUG=44109
TEST=XP page cycler buildbot should un-regress.

Review URL: http://codereview.chromium.org/2102002

git-svn-id: http://src.chromium.org/svn/trunk/src@47192 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 979c5cdd92b5732a62b80bb804d9c07671088164
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser