A little cleanup in SessionRestoreUITest.
A little cleanup in SessionRestoreUITest.

- don't reload tabs to ensure that a page loaded (it's handled in
  waiting for completion of IDC_NEW_TAB)
- simplify the code, making it shorter and issuing less automation calls

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/385066

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@31800 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