Remove dead code

chrome/browser/history/history_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.
 
 // History unit tests come in two flavors:
 //
 // 1. The more complicated style is that the unit test creates a full history
 //    service. This spawns a background thread for the history backend, and
 //    all communication is asynchronous. This is useful for testing more
 //    complicated things or end-to-end behavior.
@@ skipping 965 matching lines @@
 class HistoryTest : public testing::Test {
  public:
   HistoryTest()
       : got_thumbnail_callback_(false),
         query_url_success_(false) {
   }
 
   virtual ~HistoryTest() {
   }
 
-  void OnDeleteURLsDone(CancelableRequestProvider::Handle handle) {
-    base::MessageLoop::current()->Quit();
-  }
-
   void OnMostVisitedURLsAvailable(const MostVisitedURLList* url_list) {
     most_visited_urls_ = *url_list;
     base::MessageLoop::current()->Quit();
   }
 
  protected:
   friend class BackendDelegate;
 
   // testing::Test
   virtual void SetUp() {
@@ skipping 100 matching lines @@
   // clear this before issuing a thumbnail request.
   bool got_thumbnail_callback_;
   std::vector<unsigned char> thumbnail_data_;
 
   // Set by the redirect callback when we get data. You should be sure to
   // clear this before issuing a redirect request.
   history::RedirectList saved_redirects_;
 
   // For history requests.
   base::CancelableTaskTracker tracker_;
-  CancelableRequestConsumer consumer_;
 
   // For saving URL info after a call to QueryURL
   bool query_url_success_;
   URLRow query_url_row_;
   VisitVector query_url_visits_;
 };
 
 TEST_F(HistoryTest, AddPage) {
   ASSERT_TRUE(history_service_.get());
   // Add the page once from a child frame.
@@ skipping 738 matching lines @@
   std::vector<PageUsageData*> results;
   db_->QuerySegmentUsage(segment_time, 10, &results);
   ASSERT_EQ(1u, results.size());
   EXPECT_EQ(url, results[0]->GetURL());
   EXPECT_EQ(segment_id, results[0]->GetID());
   EXPECT_EQ(title, results[0]->GetTitle());
   STLDeleteElements(&results);
 }
 
 }  // namespace history