webkit_support: Move the logger initialization code so that it is called after AtExitManager initialization, and call InitLogging() only if !unit_test_mode.
webkit_support: Move the logger initialization code so that it is
called after AtExitManager initialization, and call InitLogging() only
if !unit_test_mode.

InitLogging() needs AtExitManager because it uses PathService.

TEST=This is a part of test code.
BUG=none
Review URL: http://codereview.chromium.org/3030018

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@53743 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