Fix for crash bug in PluginProcessHost::OnGetCookies - it likes like this can be called when we don't have a URLContext from which to return cookies. 
Fix for crash bug in PluginProcessHost::OnGetCookies - it likes like this can be called when we don't have a URLContext from which to return cookies. 

Previously we crashed, this patch just logs an error and returns an empty string instead. 

BUG=http://crbug.com/10706


Review URL: http://codereview.chromium.org/171050

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@23568 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