Send traffic-management headers from extension updater.

chrome/browser/extensions/updater/extension_updater.cc

Index: chrome/browser/extensions/updater/extension_updater.cc
diff --git a/chrome/browser/extensions/updater/extension_updater.cc b/chrome/browser/extensions/updater/extension_updater.cc
index 07503e567b6aefa7e2dc361e9f633fc2a0138982..720a7f18aa9df616c689b333cc89bb05899ffe13 100644
--- a/chrome/browser/extensions/updater/extension_updater.cc
+++ b/chrome/browser/extensions/updater/extension_updater.cc
@@ -97,7 +97,8 @@ int CalculateActivePingDays(const Time& last_active_ping_day,
 namespace extensions {
 
 ExtensionUpdater::CheckParams::CheckParams()
-    : install_immediately(false) {}
+    : install_immediately(false),
+      fetch_priority(ManifestFetchData::FetchPriority::BACKGROUND) {}
 
 ExtensionUpdater::CheckParams::~CheckParams() {}
 
@@ -306,7 +307,8 @@ void ExtensionUpdater::DoCheckSoon() {
 void ExtensionUpdater::AddToDownloader(
     const ExtensionSet* extensions,
     const std::list<std::string>& pending_ids,
-    int request_id) {
+    int request_id,
+    ManifestFetchData::FetchPriority fetch_priority) {
   InProgressCheck& request = requests_in_progress_[request_id];
   for (ExtensionSet::const_iterator extension_iter = extensions->begin();
        extension_iter != extensions->end(); ++extension_iter) {
@@ -321,7 +323,7 @@ void ExtensionUpdater::AddToDownloader(
     std::list<std::string>::const_iterator pending_id_iter = std::find(
         pending_ids.begin(), pending_ids.end(), extension.id());
     if (pending_id_iter == pending_ids.end()) {
-      if (downloader_->AddExtension(extension, request_id))
+      if (downloader_->AddExtension(extension, request_id, fetch_priority))
         request.in_progress_ids_.push_back(extension.id());
     }
   }
@@ -366,18 +368,21 @@ void ExtensionUpdater::CheckNow(const CheckParams& params) {
               *iter, info->update_url(),
               pending_extension_manager->IsPolicyReinstallForCorruptionExpected(
                   *iter),
-              request_id))
+              request_id, params.fetch_priority))
         request.in_progress_ids_.push_back(*iter);
     }
 
     ExtensionRegistry* registry = ExtensionRegistry::Get(profile_);
-    AddToDownloader(&registry->enabled_extensions(), pending_ids, request_id);
-    AddToDownloader(&registry->disabled_extensions(), pending_ids, request_id);
+    AddToDownloader(&registry->enabled_extensions(), pending_ids, request_id,
+                    params.fetch_priority);
+    AddToDownloader(&registry->disabled_extensions(), pending_ids, request_id,
+                    params.fetch_priority);
   } else {
     for (std::list<std::string>::const_iterator it = params.ids.begin();
          it != params.ids.end(); ++it) {
       const Extension* extension = service_->GetExtensionById(*it, true);
-      if (extension && downloader_->AddExtension(*extension, request_id))
+      if (extension && downloader_->AddExtension(*extension, request_id,
+                                                 params.fetch_priority))
         request.in_progress_ids_.push_back(extension->id());
     }
   }