[Extensions] Only add traffic management headers for webstore updates

extensions/browser/updater/extension_downloader.cc

 // 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.
 
 #include "extensions/browser/updater/extension_downloader.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 471 matching lines @@
                   : kUpdateInteractivityBackground);
 
   manifest_fetcher_ =
       net::URLFetcher::Create(kManifestFetcherId, active_request->full_url(),
                               net::URLFetcher::GET, this);
   manifest_fetcher_->SetRequestContext(request_context_.get());
   manifest_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
                                   net::LOAD_DO_NOT_SAVE_COOKIES |
                                   net::LOAD_DISABLE_CACHE);
 
-  // Send traffic-management headers.
+  // Send traffic-management headers to the webstore.
   // https://bugs.chromium.org/p/chromium/issues/detail?id=647516
-  manifest_fetcher_->AddExtraRequestHeader(base::StringPrintf(
-      "%s: %s", kUpdateInteractivityHeader,
-      active_request->foreground_check() ? kUpdateInteractivityForeground
-                                         : kUpdateInteractivityBackground));
-  manifest_fetcher_->AddExtraRequestHeader(
-      base::StringPrintf("%s: %s", kUpdateAppIdHeader, id_list.c_str()));
-  manifest_fetcher_->AddExtraRequestHeader(base::StringPrintf(
-      "%s: %s-%s", kUpdateUpdaterHeader,
-      UpdateQueryParams::GetProdIdString(UpdateQueryParams::CRX),
-      UpdateQueryParams::GetProdVersion().c_str()));
+  if (extension_urls::IsWebstoreUpdateUrl(active_request->full_url())) {
+    manifest_fetcher_->AddExtraRequestHeader(base::StringPrintf(
+        "%s: %s", kUpdateInteractivityHeader,
+        active_request->foreground_check() ? kUpdateInteractivityForeground
+                                           : kUpdateInteractivityBackground));
+    manifest_fetcher_->AddExtraRequestHeader(
+        base::StringPrintf("%s: %s", kUpdateAppIdHeader, id_list.c_str()));
+    manifest_fetcher_->AddExtraRequestHeader(base::StringPrintf(
+        "%s: %s-%s", kUpdateUpdaterHeader,
+        UpdateQueryParams::GetProdIdString(UpdateQueryParams::CRX),
+        UpdateQueryParams::GetProdVersion().c_str()));
+  }
 
   // Update checks can be interrupted if a network change is detected; this is
   // common for the retail mode AppPack on ChromeOS. Retrying once should be
   // enough to recover in those cases; let the fetcher retry up to 3 times
   // just in case. http://crosbug.com/130602
   manifest_fetcher_->SetAutomaticallyRetryOnNetworkChanges(3);
   manifest_fetcher_->Start();
 }
 
 void ExtensionDownloader::OnURLFetchComplete(const net::URLFetcher* source) {
@@ skipping 474 matching lines @@
     ManifestFetchData::FetchPriority fetch_priority) {
   ManifestFetchData::PingMode ping_mode = ManifestFetchData::NO_PING;
   if (update_url.DomainIs(ping_enabled_domain_.c_str()))
     ping_mode = ManifestFetchData::PING_WITH_ENABLED_STATE;
   return new ManifestFetchData(update_url, request_id, brand_code_,
                                manifest_query_params_, ping_mode,
                                fetch_priority);
 }
 
 }  // namespace extensions