Add abstractions that let embedders drive tests of WebContents.

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/browser/tab_contents/test_tab_contents.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 
 class DownloadRequestLimiterTest : public TabContentsWrapperTestHarness {
  public:
   DownloadRequestLimiterTest()
       : ui_thread_(BrowserThread::UI, &message_loop_),
@@ skipping 181 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()));
 }