Define and implement an interface for on-demand component updates.

chrome/browser/renderer_host/chrome_resource_dispatcher_host_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/renderer_host/chrome_resource_dispatcher_host_delegate.h"
 
 #include <string>
+#include <vector>
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/component_updater/component_updater_service.h"
 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/download/download_request_limiter.h"
 #include "chrome/browser/download/download_resource_throttle.h"
@@ skipping 222 matching lines @@
     if (headers.GetHeader("Accept", &accept_headers)) {
       if (accept_headers.find("application/x-pnacl") != std::string::npos &&
           pnacl::NeedsOnDemandUpdate())
         crx_id = "hnimpnehoodheedghdeeijklkeaacbdc";
     }
   }
 
   if (crx_id) {
     // We got a component we need to install, so throttle the resource
     // until the component is installed.
-    throttles->push_back(cus->GetOnDemandResourceThrottle(request, crx_id));
+    throttles->push_back(
+        cus->GetOnDemandUpdater().GetOnDemandResourceThrottle(request, crx_id));
   }
 }
 
 }  // end namespace
 
 ChromeResourceDispatcherHostDelegate::ChromeResourceDispatcherHostDelegate(
     prerender::PrerenderTracker* prerender_tracker)
     : download_request_limiter_(g_browser_process->download_request_limiter()),
       safe_browsing_(g_browser_process->safe_browsing_service()),
       user_script_listener_(new extensions::UserScriptListener()),
@@ skipping 441 matching lines @@
                                        url_request->GetTotalReceivedBytes()));
   }
 }
 
 // static
 void ChromeResourceDispatcherHostDelegate::
     SetExternalProtocolHandlerDelegateForTesting(
     ExternalProtocolHandler::Delegate* delegate) {
   g_external_protocol_handler_delegate = delegate;
 }