gcc 4.6 warnings cleanup

chrome/browser/history/history_browsertest.cc

 // Copyright (c) 2011 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 <vector>
 
 #include "base/message_loop.h"
 #include "chrome/browser/history/history.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 125 matching lines @@
 
   {
     std::vector<GURL> urls(GetHistoryContents());
     ASSERT_EQ(1U, urls.size());
     EXPECT_EQ(GetTestUrl().spec(), urls[0].spec());
   }
 }
 
 // Test that disabling saving browser history really works.
 IN_PROC_BROWSER_TEST_F(HistoryBrowserTest, SavingHistoryDisabled) {
-  base::TimeTicks start_time = base::TimeTicks::Now();
-
   GetPrefs()->SetBoolean(prefs::kSavingBrowserHistoryDisabled, true);
 
   EXPECT_TRUE(GetProfile()->GetHistoryService(Profile::EXPLICIT_ACCESS));
   EXPECT_FALSE(GetProfile()->GetHistoryService(Profile::IMPLICIT_ACCESS));
 
   ui_test_utils::WaitForHistoryToLoad(browser());
   ExpectEmptyHistory();
 
   ui_test_utils::NavigateToURL(browser(), GetTestUrl());
   WaitForHistoryBackendToRun();
   ExpectEmptyHistory();
 }
 
 // Test that changing the pref takes effect immediately
 // when the browser is running.
 IN_PROC_BROWSER_TEST_F(HistoryBrowserTest, SavingHistoryEnabledThenDisabled) {
-  base::TimeTicks start_time = base::TimeTicks::Now();
-
   EXPECT_FALSE(GetPrefs()->GetBoolean(prefs::kSavingBrowserHistoryDisabled));
 
   ui_test_utils::WaitForHistoryToLoad(browser());
 
   ui_test_utils::NavigateToURL(browser(), GetTestUrl());
   WaitForHistoryBackendToRun();
 
   {
     std::vector<GURL> urls(GetHistoryContents());
     ASSERT_EQ(1U, urls.size());
@@ skipping 31 matching lines @@
   WaitForHistoryBackendToRun();
 
   {
     std::vector<GURL> urls(GetHistoryContents());
     ASSERT_EQ(1U, urls.size());
     EXPECT_EQ(GetTestUrl().spec(), urls[0].spec());
   }
 }
 
 }  // namespace