Introduce a delegate to avoid hardcoding "chrome-extension" in net/.

chrome/browser/net/chrome_network_delegate.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 "chrome/browser/net/chrome_network_delegate.h"
 
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/extensions/api/proxy/proxy_api.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/extensions/extension_event_router_forwarder.h"
 #include "chrome/browser/extensions/extension_info_map.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/prefs/pref_member.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/task_manager/task_manager.h"
 #include "chrome/common/pref_names.h"
+#include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_request_info.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/cookies/cookie_monster.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_request.h"
@@ skipping 91 matching lines @@
     ExtensionInfoMap* extension_info_map,
     const policy::URLBlacklistManager* url_blacklist_manager,
     void* profile,
     CookieSettings* cookie_settings,
     BooleanPrefMember* enable_referrers)
     : event_router_(event_router),
       profile_(profile),
       cookie_settings_(cookie_settings),
       extension_info_map_(extension_info_map),
       enable_referrers_(enable_referrers),
+      never_throttle_requests_(false),
       url_blacklist_manager_(url_blacklist_manager) {
   DCHECK(event_router);
   DCHECK(enable_referrers);
   DCHECK(!profile || cookie_settings);
 }
 
 ChromeNetworkDelegate::~ChromeNetworkDelegate() {}
 
+void ChromeNetworkDelegate::NeverThrottleRequests() {
+  never_throttle_requests_ = true;
+}
+
 // static
 void ChromeNetworkDelegate::InitializeReferrersEnabled(
     BooleanPrefMember* enable_referrers,
     PrefService* pref_service) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   enable_referrers->Init(prefs::kEnableReferrers, pref_service, NULL);
   enable_referrers->MoveToThread(BrowserThread::IO);
 }
 
 // static
@@ skipping 197 matching lines @@
     if (white_listed_path == path.StripTrailingSeparators() ||
         white_listed_path.IsParent(path)) {
       return true;
     }
   }
   return false;
 #else
   return true;
 #endif  // defined(OS_CHROMEOS)
 }
+
+bool ChromeNetworkDelegate::OnCanThrottleRequest(
+    const net::URLRequest& request) const {
+  if (never_throttle_requests_) {
+    return false;
+  }
+
+  return request.first_party_for_cookies().scheme() !=
+      chrome::kExtensionScheme;
+}