Fix youtube crash issue
Fix youtube crash issue

[Title] Fix youtube crash issue
[Problem] When user connect youtube site, webprocess crash occured
[Cause] Youtube site use session storage and in case of session storage, there is no directory path for the storage
[Solution] Check memory space only local storage not session storage

Change-Id: I0d5ec7df6b45a51b551f55c74c63b425a1275f48

youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl,youfoh/webkit-efl