Inject the prodid for the extensions and component updaters.

components/update_client/update_checker.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/update_client/update_checker.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
@@ skipping 107 matching lines @@
                           "<package fp=\"%s\"/>"
                           "</packages>",
                           item->component.fingerprint.c_str());
     }
     base::StringAppendF(&app, "</app>");
     app_elements.append(app);
     VLOG(1) << "Appending to update request: " << app;
   }
 
   return BuildProtocolRequest(
-      config.GetBrowserVersion().GetString(), config.GetChannel(),
-      config.GetLang(), config.GetOSLongName(), config.GetDownloadPreference(),
-      app_elements, additional_attributes);
+      config.GetProdId(), config.GetBrowserVersion().GetString(),
+      config.GetChannel(), config.GetLang(), config.GetOSLongName(),
+      config.GetDownloadPreference(), app_elements, additional_attributes);
 }
 
 class UpdateCheckerImpl : public UpdateChecker {
  public:
   UpdateCheckerImpl(const scoped_refptr<Configurator>& config,
                     PersistedData* metadata);
   ~UpdateCheckerImpl() override;
 
   // Overrides for UpdateChecker.
   bool CheckForUpdates(
@@ skipping 100 matching lines @@
 }  // namespace
 
 std::unique_ptr<UpdateChecker> UpdateChecker::Create(
     const scoped_refptr<Configurator>& config,
     PersistedData* persistent) {
   return std::unique_ptr<UpdateChecker>(
       new UpdateCheckerImpl(config, persistent));
 }
 
 }  // namespace update_client