Build image_diff tool on the Mac.  Fix up a few other things that had become strange in chrome.xcodeproj. Review URL: http://codereview.chromium.org/18562
Build image_diff tool on the Mac.  Fix up a few other things that had become
strange in chrome.xcodeproj.
Review URL: http://codereview.chromium.org/18562

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@8583 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