Fix memory leak in JingleSessionTest.Connect and friends
Fix memory leak in JingleSessionTest.Connect and friends

Private key is cloned instead of transferred. This eliminates the leak in
JingleSessionTest.*.

BUG=70291
TEST=valgrind bot is green

Review URL: http://codereview.chromium.org/6317009

git-svn-id: http://src.chromium.org/svn/trunk/src@72164 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 24bdc719ee569f6113da6254c074099d4f414ea8
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