Add data usage tracking for feedback uploader, crash uploader, dom distiller

chrome/browser/tracing/crash_service_uploader.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/browser/tracing/crash_service_uploader.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/format_macros.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
+#include "components/data_use_measurement/core/data_use_user_data.h"
 #include "components/tracing/common/tracing_switches.h"
 #include "components/version_info/version_info.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
 #include "net/base/mime_util.h"
 #include "net/base/network_delegate.h"
 #include "net/proxy/proxy_config.h"
 #include "net/proxy/proxy_config_service.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context.h"
@@ skipping 273 matching lines @@
     const std::string& post_data) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   DCHECK(!url_fetcher_.get());
 
   std::string content_type = kUploadContentType;
   content_type.append("; boundary=");
   content_type.append(kMultipartBoundary);
 
   url_fetcher_ =
       net::URLFetcher::Create(GURL(upload_url), net::URLFetcher::POST, this);
+  data_use_measurement::DataUseUserData::AttachToFetcher(
+      url_fetcher_.get(),
+      data_use_measurement::DataUseUserData::TRACING_CRASH_UPLOADER);

[oystein (OOO til 10th of July), 2016/10/14 22:15:59]

Yeah as primiano mentioned, I would just call this "TRACE_UPLOADER". The "crash"
part is an implementation detail (my bad on the naming :) ).

   url_fetcher_->SetRequestContext(request_context_);
   url_fetcher_->SetUploadData(content_type, post_data);
   url_fetcher_->Start();
 }