Disable CFAllocator patching on systems for which we don't know their internal structure.
Disable CFAllocator patching on systems for which we don't know their internal structure.

BUG=http://crbug.com/45363
TEST=no crash on unreleased systems

Review URL: http://codereview.chromium.org/2417008

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@48747 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