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

net/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/buildflag_header.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
@@ skipping 2903 matching lines @@
       "android/java/src/org/chromium/net/NetworkChangeNotifier.java",
       "android/java/src/org/chromium/net/ProxyChangeListener.java",
       "android/java/src/org/chromium/net/X509Util.java",
     ]
     jni_package = "net"
   }
   generate_jni("net_test_jni_headers") {
     sources = [
       "android/javatests/src/org/chromium/net/AndroidKeyStoreTestUtil.java",
       "android/javatests/src/org/chromium/net/AndroidNetworkLibraryTestUtil.java",
+      "android/javatests/src/org/chromium/net/AndroidProxyConfigServiceTestUtil.java",
       "test/android/javatests/src/org/chromium/net/test/DummySpnegoAuthenticator.java",
       "test/android/javatests/src/org/chromium/net/test/EmbeddedTestServerImpl.java",
     ]
     jni_package = "net/test"
   }
 }
 
 if (is_android || is_linux) {
   executable("disk_cache_memory_test") {
     testonly = true
@@ skipping 2770 matching lines @@
   ]
   deps = [
     ":net_fuzzer_test_support",
     ":test_support",
     "//base",
     "//net",
   ]
   dict = "data/fuzzer_dictionaries/net_spdy_session_fuzzer.dict"
   seed_corpus = "data/fuzzer_data/net_spdy_session_fuzzer/"
 }