Remove unused using content::ResourceType

chrome/browser/prerender/prerender_resource_throttle_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 <set>
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 10 matching lines @@
 #include "content/public/test/test_browser_thread.h"
 #include "ipc/ipc_message.h"
 #include "net/base/request_priority.h"
 #include "net/test/url_request/url_request_mock_http_job.h"
 #include "net/url_request/redirect_info.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
-using content::ResourceType;
 
 namespace prerender {
 
 namespace {
 
 class TestPrerenderContents : public PrerenderContents {
  public:
   TestPrerenderContents(PrerenderManager* prerender_manager,
                         int child_id, int route_id)
       : PrerenderContents(prerender_manager, static_cast<Profile*>(NULL),
@@ skipping 280 matching lines @@
   // We should have cancelled the prerender.
   EXPECT_EQ(FINAL_STATUS_BAD_DEFERRED_REDIRECT,
             test_contents()->final_status());
 
   // Cleanup work so the prerender is gone.
   test_contents()->Cancel();
   RunEvents();
 }
 
 }  // namespace prerender