connectivity-change events can happen before boot completes (similar to:
https://android-git.corp.google.com/g/#change,87425 )


Change-Id: Ibc0f12defaa5d90894657ce63fb352578eca7060
diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index 3b47bce..ce23d45 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -2173,7 +2173,8 @@
         if (proxy == null) proxy = new ProxyProperties("", 0, "");
         log("sending Proxy Broadcast for " + proxy);
         Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
-        intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
+        intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING |
+            Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
         intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy);
         mContext.sendStickyBroadcast(intent);
     }