Add server_url and mime_type params to CreateUploader.

components/metrics/metrics_service_client.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 "components/metrics/metrics_service_client.h"
 
+#include "components/metrics/url_constants.h"
+
 namespace metrics {
 
 base::string16 MetricsServiceClient::GetRegistryBackupKey() {
   return base::string16();
 }
 
 bool MetricsServiceClient::IsReportingPolicyManaged() {
   return false;
 }
 
 EnableMetricsDefault MetricsServiceClient::GetMetricsReportingDefaultState() {
   return EnableMetricsDefault::DEFAULT_UNKNOWN;
 }
 
 bool MetricsServiceClient::IsUMACellularUploadLogicEnabled() {
   return false;
 }
 
+std::string MetricsServiceClient::GetMetricsServerUrl() {
+  return metrics::kDefaultMetricsServerUrl;
+}
+
 }  // namespace metrics