[Cronet] Continue UrlRequest with NULL certificate if Client cert is requested.

components/cronet/android/test/mock_url_request_job_factory.cc

Index: components/cronet/android/test/mock_url_request_job_factory.cc
diff --git a/components/cronet/android/test/mock_url_request_job_factory.cc b/components/cronet/android/test/mock_url_request_job_factory.cc
index 716faa82cdf5b569297447ec3de1f9df77319df4..3ec6cec715f99c212b47cb90a024df60a37ee8b2 100644
--- a/components/cronet/android/test/mock_url_request_job_factory.cc
+++ b/components/cronet/android/test/mock_url_request_job_factory.cc
@@ -49,6 +49,13 @@ ScopedJavaLocalRef<jstring> GetMockUrlForSSLCertificateError(
   return base::android::ConvertUTF8ToJavaString(jenv, url.spec());
 }
 
+ScopedJavaLocalRef<jstring> GetMockUrlForClientCertificateRequest(
+    JNIEnv* jenv,
+    const JavaParamRef<jclass>& jcaller) {
+  GURL url(net::URLRequestMockDataJob::GetMockUrlForClientCertificateRequest());
+  return base::android::ConvertUTF8ToJavaString(jenv, url.spec());
+}
+
 bool RegisterMockUrlRequestJobFactory(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }