[Cronet] Move initialization to a new thread rather than the UI thread.

net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java

Index: net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
diff --git a/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java b/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
index 78342aa6632fd367802498c84914e8f724e57251..caa9ec86ec24d45303f920095163d1e8f4109916 100644
--- a/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
+++ b/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
@@ -592,6 +592,7 @@ public class NetworkChangeNotifierTest {
     @MediumTest
     @Feature({"Android-AppBase"})
     public void testNetworkChangeNotifierJavaObservers() {
+        mReceiver.register();
         // Initialize the NetworkChangeNotifier with a connection.
         Intent connectivityIntent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
         mReceiver.onReceive(InstrumentationRegistry.getInstrumentation().getTargetContext(),
@@ -657,6 +658,7 @@ public class NetworkChangeNotifierTest {
     @MediumTest
     @Feature({"Android-AppBase"})
     public void testNetworkChangeNotifierMaxBandwidthNotifications() {
+        mReceiver.register();
         // Initialize the NetworkChangeNotifier with a connection.
         mConnectivityDelegate.setActiveNetworkExists(true);
         mConnectivityDelegate.setNetworkType(ConnectivityManager.TYPE_WIFI);
@@ -953,6 +955,7 @@ public class NetworkChangeNotifierTest {
     @MediumTest
     @Feature({"Android-AppBase"})
     public void testNetworkChangeNotifierIsOnline() {
+        mReceiver.register();
         Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
         // For any connection type it should return true.
         for (int i = ConnectivityManager.TYPE_MOBILE; i < ConnectivityManager.TYPE_VPN; i++) {