Merge "[Settings] Adopt TelephonyBasePreferenceController to data usage" into rvc-dev am: a4efeb7a0a
am: 2538b62bea
am: 22d566f457
am: 8feca1f769
am: 2a5f9289e4
Change-Id: I4723dd020d24d5a49353f6d24124554230aeebeb
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