Add Yandex referral ID to search URL.

chrome/browser/android/locale/locale_manager.cc

+// Copyright 2017 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/browser/android/locale/locale_manager.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "jni/LocaleManager_jni.h"
+
+// static
+std::string LocaleManager::GetYandexReferralID() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  base::android::ScopedJavaLocalRef<jobject> jlocale_manager =
+      Java_LocaleManager_getInstance(env);
+  return base::android::ConvertJavaStringToUTF8(
+      env, Java_LocaleManager_getYandexReferralId(env, jlocale_manager));
+}