Mark SrpcPluginTest as flaky.
Mark SrpcPluginTest as flaky.

BUG=643
TEST=none

Review URL: http://codereview.chromium.org/2799029

git-svn-id: http://src.chromium.org/svn/trunk/src@50665 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 0548e6c1a189ec1ab27cb63ff3a124f56c2d4ad0
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