[Cronet] Move NetworkChangeNotifier initialization off UI thread

components/cronet/android/BUILD.gn

Index: components/cronet/android/BUILD.gn
diff --git a/components/cronet/android/BUILD.gn b/components/cronet/android/BUILD.gn
index 94aa5cff2e4f9461dfd09e0693dd7735b38cd7cd..cb0c916bac36363742b14b65ed805aaa435d0265 100644
--- a/components/cronet/android/BUILD.gn
+++ b/components/cronet/android/BUILD.gn
@@ -25,6 +25,7 @@ generate_jni("cronet_jni_headers") {
     "java/src/org/chromium/net/impl/CronetUploadDataStream.java",
     "java/src/org/chromium/net/impl/CronetUrlRequest.java",
     "java/src/org/chromium/net/impl/CronetUrlRequestContext.java",
+    "java/src/org/chromium/net/impl/NetworkChangeNotifierIniter.java",
   ]
   jni_package = "cronet"
 }
@@ -197,6 +198,8 @@ template("cronet_static_tmpl") {
       "//components/cronet/android/io_buffer_with_byte_buffer.h",
       "//components/cronet/android/metrics_util.cc",
       "//components/cronet/android/metrics_util.h",
+      "//components/cronet/android/network_change_notifier_initer.cc",
+      "//components/cronet/android/network_change_notifier_initer.h",
       "//components/cronet/android/url_request_error.cc",
       "//components/cronet/android/url_request_error.h",
       "//components/cronet/histogram_manager.cc",
@@ -377,6 +380,7 @@ android_library("cronet_impl_native_java") {
     "java/src/org/chromium/net/impl/CronetUrlRequestContext.java",
     "java/src/org/chromium/net/impl/NativeCronetEngineBuilderImpl.java",
     "java/src/org/chromium/net/impl/NativeCronetProvider.java",
+    "java/src/org/chromium/net/impl/NetworkChangeNotifierIniter.java",
     "java/src/org/chromium/net/urlconnection/CronetBufferedOutputStream.java",
     "java/src/org/chromium/net/urlconnection/CronetChunkedOutputStream.java",
     "java/src/org/chromium/net/urlconnection/CronetFixedModeOutputStream.java",