[Cronet] add missing certificate file for tests

components/cronet/android/BUILD.gn

 # Copyright 2015 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/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/util/process_version.gni")
 import("//build/util/version.gni")
 import("//testing/test.gni")
@@ skipping 1325 matching lines @@
     "//net/android:net_test_support_apk",
   ]
 }
 
 copy("cronet_package_copy_test_files") {
   testonly = true
   sources = [
     "//net/data/ssl/certificates/quic_test.example.com.crt",
     "//net/data/ssl/certificates/quic_test.example.com.key",
     "//net/data/ssl/certificates/quic_test.example.com.key.pkcs8",
+    "//net/data/ssl/certificates/quic_test.example.com.key.pkcs8.pem",
     "//net/data/ssl/certificates/quic_test.example.com.key.sct",
   ]
   outputs = [
     "$_test_package_dir/assets/test_files/net/data/ssl/certificates/{{source_file_part}}",
   ]
   deps = [
     # Not really dependent, but builds can fail if these two targets attempt
     # to create the "assets" subdirectory simultaneously.
     ":cronet_package_copy_test_assets",
   ]
@@ skipping 112 matching lines @@
     deps = [
       ":cronet_package_copy_native_test_lib",
       ":cronet_package_copy_native_test_lib_unstripped",
       ":cronet_package_copy_test_assets",
       ":cronet_package_copy_test_files",
       ":cronet_package_copy_test_support_apks",
       ":repackage_extracted_test_jars",
     ]
   }
 }