Use Sync FakeServer in Android tests via custom APK

chrome/android/sync_shell/chrome_main_delegate_chrome_sync_shell_android.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 "chrome/android/sync_shell/chrome_main_delegate_chrome_sync_shell_android.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_registrar.h"
+#include "components/search_engines/template_url_prepopulate_data.h"
+#include "sync/test/fake_server/android/fake_server_helper_android.h"
+
+static const char kDefaultCountryCode[] = "US";
+
+ChromeMainDelegateAndroid* ChromeMainDelegateAndroid::Create() {
+  return new ChromeMainDelegateChromeSyncShellAndroid();
+}
+
+ChromeMainDelegateChromeSyncShellAndroid::
+ChromeMainDelegateChromeSyncShellAndroid() {
+}
+
+ChromeMainDelegateChromeSyncShellAndroid::
+~ChromeMainDelegateChromeSyncShellAndroid() {
+}
+
+bool
+ChromeMainDelegateChromeSyncShellAndroid::RegisterApplicationNativeMethods(
+    JNIEnv* env) {
+  return ChromeMainDelegateAndroid::RegisterApplicationNativeMethods(env) &&
+      FakeServerHelperAndroid::Register(env);
+}
+
+bool ChromeMainDelegateChromeSyncShellAndroid::BasicStartupComplete(
+    int* exit_code) {
+  TemplateURLPrepopulateData::InitCountryCode(kDefaultCountryCode);
+  return ChromeMainDelegateAndroid::BasicStartupComplete(exit_code);
+}
+