ResourcesTest: fix build.

 * There are several SetTo methods, specify the one we want to test.
Disable test for TranslatorResoter::Version

 * The method was made private and deprecated, so there is no way to
compile code calling it directly.
Disable the MIME type test.

* This tests requires some private APIs which have been changed, it
needs to be rewritten.
* I'm also not sure if it's still possible to work on a copy of the MIME
* database to avoid messing with the system one.