prevent new more than one Resources for system

MIUI-28807

Change-Id: I295b47c9700709489e21e4830216a0a9e4400bd7
Signed-off-by: mochangming <mochangming@xiaomi.com>
Add code in zygote to suppport network firewall.

MIUI-28912

Change-Id: I213fcf30489d4e57b146232f49f3c5f8a76a3919
Signed-off-by: mochangming <mochangming@xiaomi.com>
Remove some MIUI code in NetworkPolicyManagerService to support new NetworkAssistant mobile limit logic.

MIUI-30602

Change-Id: Ia3112cb5da8607a3b12b42da693b44f0debac2cf
Signed-off-by: mochangming <mochangming@xiaomi.com>
modify low memory notification style

Ref-Id: I6e7e89726d04ce963d2dece3f2ab24b2ee8fc2d9
Change-Id: I0ee51fb2cd1cd85df48cd2d635b33aa41db55a30
Signed-off-by: mochangming <mochangming@xiaomi.com>
kill system application's backgroud process started by broadcast for more memory

MIUI-28628

Change-Id: Ie074d2b629a9837a0f7f38ad479cf6a34ce13aa8
Signed-off-by: mochangming <mochangming@xiaomi.com>
The 3rd-party app can be deleted directlly even register as device manager.

MIUI-29021

Change-Id: I4b86d78c375a29540a4acfd2a3b7a6c9439fd63d
Signed-off-by: mochangming <mochangming@xiaomi.com>