Fix crash when download from popup.

chrome/browser/download/download_request_limiter_unittest.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 "base/bind.h"
 #include "chrome/browser/download/download_request_limiter.h"
 #include "chrome/browser/ui/tab_contents/test_tab_contents_wrapper.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/test/test_browser_thread.h"
@@ skipping 22 matching lines @@
   }
 
   virtual void TearDown() {
     DownloadRequestLimiter::SetTestingDelegate(NULL);
 
     TabContentsWrapperTestHarness::TearDown();
   }
 
   void CanDownload() {
     download_request_limiter_->CanDownloadImpl(
-        contents_wrapper(),
+        web_contents(),
         -1,  // request id
         "GET",  // request method
         base::Bind(&DownloadRequestLimiterTest::ContinueDownload,
                    base::Unretained(this)));
     message_loop_.RunAllPending();
   }
 
   bool ShouldAllowDownload() {
     ask_allow_count_++;
     return allow_download_;
@@ skipping 146 matching lines @@
   // And make sure we really can't download.
   ask_allow_count_ = continue_count_ = cancel_count_ = 0;
   CanDownload();
   ASSERT_EQ(0, ask_allow_count_);
   ASSERT_EQ(0, continue_count_);
   ASSERT_EQ(1, cancel_count_);
   // And the state shouldn't have changed.
   ASSERT_EQ(DownloadRequestLimiter::DOWNLOADS_NOT_ALLOWED,
             download_request_limiter_->GetDownloadStatus(contents()));
 }