Cancel prerender when we discover a download starting from a page we are prer...

chrome/browser/renderer_host/resource_dispatcher_host.cc

 // Copyright (c) 2011 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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "chrome/browser/renderer_host/resource_dispatcher_host.h"
 
 #include <set>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/scoped_ptr.h"
 #include "base/shared_memory.h"
 #include "base/stl_util-inl.h"
 #include "base/time.h"
 #include "chrome/browser/cert_store.h"
 #include "chrome/browser/child_process_security_policy.h"
 #include "chrome/browser/chrome_blob_storage_context.h"
 #include "chrome/browser/cross_site_request_manager.h"
 #include "chrome/browser/download/download_file_manager.h"
 #include "chrome/browser/download/download_manager.h"
 #include "chrome/browser/download/download_request_limiter.h"
+#include "chrome/browser/download/download_util.h"
 #include "chrome/browser/download/save_file_manager.h"
 #include "chrome/browser/extensions/user_script_listener.h"
 #include "chrome/browser/external_protocol_handler.h"
 #include "chrome/browser/in_process_webkit/webkit_thread.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/net/url_request_tracking.h"
 #include "chrome/browser/plugin_service.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_resource_handler.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 651 matching lines @@
     return;
 
   // Check if the renderer is permitted to request the requested URL.
   if (!ChildProcessSecurityPolicy::GetInstance()->
           CanRequestURL(child_id, url)) {
     VLOG(1) << "Denied unauthorized download request for "
             << url.possibly_invalid_spec();
     return;
   }
 
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      NewRunnableFunction(&download_util::NotifyDownloadInitiated,
+                          child_id, route_id));
+
   // Ensure the Chrome plugins are loaded, as they may intercept network
   // requests.  Does nothing if they are already loaded.
   PluginService::GetInstance()->LoadChromePlugins(this);
   net::URLRequest* request = new net::URLRequest(url, this);
 
   request_id_--;
 
   scoped_refptr<ResourceHandler> handler(
       new DownloadResourceHandler(this,
                                   child_id,
@@ skipping 1228 matching lines @@
   return is_prefetch_enabled_;
 }
 
 // static
 void ResourceDispatcherHost::set_is_prefetch_enabled(bool value) {
   is_prefetch_enabled_ = value;
 }
 
 // static
 bool ResourceDispatcherHost::is_prefetch_enabled_ = false;