prevent new more than one Resources for system

MIUI-28807

Change-Id: I7e50bb8059e48af37ce01d24efceeb1dff1f381d
Signed-off-by: mochangming <mochangming@xiaomi.com>
Add code in zygote to suppport network firewall.

MIUI-28912

Change-Id: Id885f912d78e5bf94ea729b629ea232950ffa9e8
Signed-off-by: mochangming <mochangming@xiaomi.com>
Remove some MIUI code in NetworkPolicyManagerService to support new NetworkAssistant mobile limit logic.

MIUI-30602

Change-Id: If975a0f5604cc201aa2c0679015d729f844dd2f9
Signed-off-by: mochangming <mochangming@xiaomi.com>
modify low memory notification style

Ref-Id: I6e7e89726d04ce963d2dece3f2ab24b2ee8fc2d9
Change-Id: I7e0adc8a2eeb9384be41218c142bd0215f5a6e90
Signed-off-by: mochangming <mochangming@xiaomi.com>
kill system application's backgroud process started by broadcast for more memory

MIUI-28628

Change-Id: I058f896d06cb780d5e80ad42f423fe89ccb2aaa1
Signed-off-by: mochangming <mochangming@xiaomi.com>
The 3rd-party app can be deleted directlly even register as device manager.

MIUI-29021

Change-Id: I21f7d5e63980b84a672fbe5839eb92a606feb467
Signed-off-by: mochangming <mochangming@xiaomi.com>