Setup initial mock url request job tests for Cronet

components/cronet/android/test/cronet_tests_jni.cc

 // 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.
 
 #include <jni.h>
 
 #include "base/android/base_jni_registrar.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_registrar.h"
 #include "components/cronet/android/cronet_loader.h"
+#include "cronet_mock_job_interceptor.h"
+#include "net/url_request/url_request_filter.h"
 
 namespace {
 
 const base::android::RegistrationMethod kCronetTestsRegisteredMethods[] = {
   {"BaseAndroid", base::android::RegisterJni},
 };
 
 }  // namespace
 
 // This is called by the VM when the shared library is first loaded.
 // Checks the available version of JNI. Also, caches Java reflection artifacts.
 extern "C" jint JNI_OnLoad(JavaVM* vm, void* reserved) {
   JNIEnv* env;
   if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
     return -1;
   }
 
   jint cronet_onload = cronet::CronetOnLoad(vm, reserved);
   if (cronet_onload == -1)
     return cronet_onload;
 
   if (!base::android::RegisterNativeMethods(
           env,
           kCronetTestsRegisteredMethods,
           arraysize(kCronetTestsRegisteredMethods))) {
     return -1;
   }
+
+  if (!cronet::AddUrlInterceptors())
+    return -1;
   return cronet_onload;
 }
 
 extern "C" void JNI_OnUnLoad(JavaVM* vm, void* reserved) {
+  net::URLRequestFilter::GetInstance()->ClearHandlers();
   cronet::CronetOnUnLoad(vm, reserved);
 }