Modify the "dangerous download" algorithm as follows. Original patch by Pier...

webkit/glue/weburlloader_impl.cc

 // Copyright (c) 2010 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.
 
 // An implementation of WebURLLoader in terms of ResourceLoaderBridge.
 
 #include "webkit/glue/weburlloader_impl.h"
 
 #include "base/file_path.h"
 #include "base/message_loop.h"
@@ skipping 417 matching lines @@
   request_info.referrer = referrer_url;
   request_info.frame_origin = frame_origin;
   request_info.main_frame_origin = main_frame_origin;
   request_info.headers = flattener.GetBuffer();
   request_info.load_flags = load_flags;
   request_info.requestor_pid = requestor_pid;
   request_info.request_type = FromTargetType(request.targetType());
   request_info.appcache_host_id = request.appCacheHostID();
   request_info.routing_id = request.requestorID();
   request_info.download_to_file = request.downloadToFile();
+  request_info.has_user_gesture = request.hasUserGesture();
   bridge_.reset(ResourceLoaderBridge::Create(request_info));
 
   if (!request.httpBody().isNull()) {
     // GET and HEAD requests shouldn't have http bodies.
     DCHECK(method != "GET" && method != "HEAD");
     const WebHTTPBody& httpBody = request.httpBody();
     size_t i = 0;
     WebHTTPBody::Element element;
     while (httpBody.elementAt(i++, element)) {
       switch (element.type) {
@@ skipping 301 matching lines @@
 
 void WebURLLoaderImpl::cancel() {
   context_->Cancel();
 }
 
 void WebURLLoaderImpl::setDefersLoading(bool value) {
   context_->SetDefersLoading(value);
 }
 
 }  // namespace webkit_glue