Put most of netd into the android::net namespace.

Test: netd_{unit,integration}_test pass
Test: bullhead builds, boots
Bug: 34873832
Change-Id: I0a252328041b342f9c03cd08c11a69d452b045b3
diff --git a/server/VirtualNetwork.h b/server/VirtualNetwork.h
index 1a6a136..e48060b 100644
--- a/server/VirtualNetwork.h
+++ b/server/VirtualNetwork.h
@@ -22,6 +22,9 @@
 #include "Network.h"
 #include "UidRanges.h"
 
+namespace android {
+namespace net {
+
 // A VirtualNetwork may be "secure" or not.
 //
 // A secure VPN is the usual type of VPN that grabs the default route (and thus all user traffic).
@@ -55,4 +58,7 @@
     UidRanges mUidRanges;
 };
 
+}  // namespace net
+}  // namespace android
+
 #endif  // NETD_SERVER_VIRTUAL_NETWORK_H