[Cronet] Switch from InstrumentationTest to junit

net/android/BUILD.gn

 # Copyright 2014 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/config/android/config.gni")
 import("//build/config/android/rules.gni")
 
 android_library("net_java") {
   DEPRECATED_java_in_dir = "java/src"
   deps = [
@@ skipping 24 matching lines @@
   ]
   srcjar_deps = [ ":net_java_test_support_enums_srcjar" ]
 }
 
 android_library("net_javatests") {
   DEPRECATED_java_in_dir = "javatests/src"
   deps = [
     "//base:base_java",
     "//base:base_java_test_support",
     ":net_java",
+    ":net_java_test_support",
   ]
 }
 
 java_cpp_template("net_errors_java") {
   package_name = "org/chromium/net"
   sources = [
     "java/NetError.template",
   ]
   inputs = [
     "../base/net_error_list.h",
@@ skipping 45 matching lines @@
 if (false) {
   unittest_apk("net_unittests_apk") {
     deps = [
       ":net_java",
       ":net_javatests",
       "//net:net_unittests",
     ]
     unittests_dep = "//net:net_unittests"
   }
 }