Fix FileTest.

FileTest.testParent expects "user.home" to be non empty. The test
uses "user.home" because the author of the test (mistakenly) assumed
that calling "new File(path)" creates a new file. The value can be
safely replaced by a non-empty and non-existent path.

This test was broken by commit 566618403d002719a94a6624 changed
"user.home" from "/" to "" to match the documented value of the
property and to match all older versions of android *except* for
kitkat (which sets "/").

Note that this test is new with "L".

bug: 17906647
Change-Id: I21ca18c8d53095c37a9068ce18bcf937a0ccf877
1 file changed