Track network stack error codes from UMA and UKM

components/metrics/net/net_metrics_log_uploader_unittest.cc

 // 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.
 
 #include "components/metrics/net/net_metrics_log_uploader.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace metrics {
 
 class NetMetricsLogUploaderTest : public testing::Test {
  public:
   NetMetricsLogUploaderTest() : on_upload_complete_count_(0) {
   }
 
   void CreateAndOnUploadCompleteReuseUploader() {
     uploader_.reset(new NetMetricsLogUploader(
         NULL, "http://dummy_server", "dummy_mime", MetricsLogUploader::UMA,
         base::Bind(&NetMetricsLogUploaderTest::OnUploadCompleteReuseUploader,
                    base::Unretained(this))));
     uploader_->UploadLog("initial_dummy_data", "initial_dummy_hash");
   }
 
-  void OnUploadCompleteReuseUploader(int response_code) {
+  void OnUploadCompleteReuseUploader(int response_code, int error_code) {
     ++on_upload_complete_count_;
     if (on_upload_complete_count_ == 1)
       uploader_->UploadLog("dummy_data", "dummy_hash");
   }
 
   int on_upload_complete_count() const {
     return on_upload_complete_count_;
   }
 
  private:
@@ skipping 12 matching lines @@
   fetcher->delegate()->OnURLFetchComplete(fetcher);
 
   // Mimic the second fetcher callback.
   fetcher = factory.GetFetcherByID(0);
   fetcher->delegate()->OnURLFetchComplete(fetcher);
 
   EXPECT_EQ(on_upload_complete_count(), 2);
 }
 
 }  // namespace metrics