Fix a problem that user validated dangerous download cannot resume

chrome/browser/download/download_target_determiner.cc

 // Copyright 2013 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/download/download_target_determiner.h"
 
 #include "base/location.h"
 #include "base/rand_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
@@ skipping 578 matching lines @@
   DoLoop();
 }
 #endif
 
 DownloadTargetDeterminer::Result
     DownloadTargetDeterminer::DoCheckDownloadUrl() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(!virtual_path_.empty());
   next_state_ = STATE_CHECK_VISITED_REFERRER_BEFORE;
 
+  // If user has validated a dangerous download, don't check.
+  if (danger_type_ == content::DOWNLOAD_DANGER_TYPE_USER_VALIDATED)
+    return CONTINUE;
+
   delegate_->CheckDownloadUrl(
       download_,
       virtual_path_,
       base::Bind(&DownloadTargetDeterminer::CheckDownloadUrlDone,
                  weak_ptr_factory_.GetWeakPtr()));
   return QUIT_DOLOOP;
 }
 
 void DownloadTargetDeterminer::CheckDownloadUrlDone(
     content::DownloadDangerType danger_type) {
@@ skipping 334 matching lines @@
     const base::FilePath& suggested_path) {
   return base::FilePath(suggested_path.value() + kCrdownloadSuffix);
 }
 
 #if defined(OS_WIN)
 // static
 bool DownloadTargetDeterminer::IsAdobeReaderUpToDate() {
   return g_is_adobe_reader_up_to_date_;
 }
 #endif