Undisable SessionHistoryTest.HistoryLength
Undisable SessionHistoryTest.HistoryLength

There is not enough data to see what is happening.
Test itself seems to be fine.

TEST=ui_tests
BUG=38583

Review URL: http://codereview.chromium.org/3093007

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@55236 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser