[Tizen] Fix invalid AttributeFilter.attributeName issue

AttributeFilter has been refactored.
Setter and getter for attributeName have been added.

BUG=XWALK-3122

Change-Id: I5507a67731371846a6f86860117f3fef29ae1ef8
Merge pull request #417 from sstolinski/XWALK_3122

[Tizen] Fix invalid AttributeFilter.attributeName issue