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/NetlinkHandler.h b/server/NetlinkHandler.h
index d97c864..2f4c01c 100644
--- a/server/NetlinkHandler.h
+++ b/server/NetlinkHandler.h
@@ -21,6 +21,9 @@
 #include <sysutils/NetlinkListener.h>
 #include "NetlinkManager.h"
 
+namespace android {
+namespace net {
+
 class NetlinkHandler: public NetlinkListener {
     NetlinkManager *mNm;
 
@@ -49,4 +52,8 @@
     void notifyRouteChange(NetlinkEvent::Action action, const char *route, const char *gateway, const char *iface);
     void notifyStrictCleartext(const char* uid, const char* hex);
 };
+
+}  // namespace net
+}  // namespace android
+
 #endif