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/ClatdController.cpp b/server/ClatdController.cpp
index 348a0dd..85c1b02 100644
--- a/server/ClatdController.cpp
+++ b/server/ClatdController.cpp
@@ -34,6 +34,9 @@
 
 static const char* kClatdPath = "/system/bin/clatd";
 
+namespace android {
+namespace net {
+
 ClatdController::ClatdController(NetworkController* controller)
         : mNetCtrl(controller) {
 }
@@ -144,3 +147,6 @@
     }
     return waitpid_status == 0; // 0 while child is running
 }
+
+}  // namespace net
+}  // namespace android