Fix SCOPED_TRACE to not access memory in a wrong way.
Fix SCOPED_TRACE to not access memory in a wrong way.

TEST=Covered by net_unittests.
BUG=25520
TBR=eroman

Review URL: http://codereview.chromium.org/344015

git-svn-id: http://src.chromium.org/svn/trunk/src@30360 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9e8b438ce854f2f12ea5b6801e8e42a8633cb455
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