[GTK] Disable IndexedDB
https://bugs.webkit.org/show_bug.cgi?id=135692

Reviewed by Carlos Garcia Campos.

.:

* Source/cmake/OptionsGTK.cmake:

Tools:

* Scripts/webkitperl/FeatureList.pm:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@172205 268f45cc-cd09-0410-ab3c-d52691b4dbfc