Widen a suppression for TSan/Win bug #60536
Widen a suppression for TSan/Win bug #60536

I've missed these stacks:
==2556==    T0 (L{}):
==2556==     #0  scoped_refptr<net::GrowableIOBuffer>::operator-> base/ref_counted.h:245
==2556==     #1  remoting::TCPChannelTester::CheckResults remoting/protocol/jingle_chromoting_connection_unittest.cc:291
...
==2556==    T11 (L{}):
==2556==     #0  scoped_refptr<net::GrowableIOBuffer>::operator= base/ref_counted.h:264
==2556==     #1  remoting::TCPChannelTester::InitBuffers remoting/protocol/jingle_chromoting_connection_unittest.cc:306

BUG=60536
TEST=TSan/Win should go green
TBR=glider

Review URL: http://codereview.chromium.org/3969007

git-svn-id: http://src.chromium.org/svn/trunk/src@63726 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 8e0e059cb4076224744c7a5a9772a3c5a7f982fa
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