Framework to ascribe all network data use to a source.

chrome/browser/io_thread.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_IO_THREAD_H_
 #define CHROME_BROWSER_IO_THREAD_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 42 matching lines @@
 }
 
 namespace chrome_browser_net {
 class DnsProbeService;
 }
 
 namespace data_usage {
 class DataUseAggregator;
 }
 
+namespace data_use_measurement {
+class ChromeDataUseAscriber;
+}
+
 namespace extensions {
 class EventRouterForwarder;
 }
 
 namespace net {
 class CTPolicyEnforcer;
 class CertVerifier;
 class ChannelIDService;
 class CookieStore;
 class CTLogVerifier;
@@ skipping 48 matching lines @@
       explicit SystemRequestContextLeakChecker(Globals* globals);
       ~SystemRequestContextLeakChecker();
 
      private:
       Globals* const globals_;
     };
 
     Globals();
     ~Globals();
 
+    // Ascribes all data use in Chrome to a source, such as page loads.
+    std::unique_ptr<data_use_measurement::ChromeDataUseAscriber>
+        data_use_ascriber;
     // Global aggregator of data use. It must outlive the
     // |system_network_delegate|.
     std::unique_ptr<data_usage::DataUseAggregator> data_use_aggregator;
 #if BUILDFLAG(ANDROID_JAVA_UI)
     // An external observer of data use.
     std::unique_ptr<chrome::android::ExternalDataUseObserver>
         external_data_use_observer;
 #endif  // BUILDFLAG(ANDROID_JAVA_UI)
     // The "system" NetworkDelegate, used for Profile-agnostic network events.
     std::unique_ptr<net::NetworkDelegate> system_network_delegate;
@@ skipping 254 matching lines @@
   // Callback for updating data use prefs which needs to be initialized on UI
   // thread and passed to |ChromeNetworkDelegate|.
   metrics::UpdateUsagePrefCallbackType metrics_data_use_forwarder_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_