[Android Webview] Refactor LoadUrlTest and work on embedded_test_server custom handler

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 2302 matching lines @@
   ]
   outputs = [
     "{{bundle_resources_dir}}/" +
         "{{source_root_relative_dir}}/{{source_file_part}}",
   ]
 }
 
 static_library("test_support") {
   testonly = true
   sources = [
+    "../android_webview/embeddedtestserver/custom_handlers.cc",
+    "../android_webview/embeddedtestserver/custom_handlers.h",
     "base/load_timing_info_test_util.cc",
     "base/load_timing_info_test_util.h",
     "base/mock_file_stream.cc",
     "base/mock_file_stream.h",
     "base/test_completion_callback.cc",
     "base/test_completion_callback.h",
     "cert/mock_cert_verifier.cc",
     "cert/mock_cert_verifier.h",
     "cert/mock_client_cert_verifier.cc",
     "cert/mock_client_cert_verifier.h",
@@ skipping 3401 matching lines @@
       "tools/transport_security_state_generator/trie/trie_writer.cc",
       "tools/transport_security_state_generator/trie/trie_writer.h",
     ]
     deps = [
       "//base",
       "//crypto",
       "//third_party/boringssl",
     ]
   }
 }