[Mac] Revert the diagnostic messages added in r57088.
[Mac] Revert the diagnostic messages added in r57088.

BUG=52918
TEST=Less log spam.
Review URL: http://codereview.chromium.org/3164035

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@57194 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