Change DcTracker to use URL_FILTERED.

Fix: 68208263
Test: runtest -x frameworks/opt/telephony/tests/telephonytests/src/com/android/internal/telephony/dataconnection/DcTrackerTest.java

Design doc: https://docs.google.com/document/d/1UEYjhRGSEwwccPLs_FzFD-IeOsVq63gxmAHNtDfnzAY/edit?ts=5a0526aa&pli=1#

Change-Id: I116c2285c05b55ace52b7b5212dbc59d5b002a63