gcc 4.6 warnings cleanup

chrome/browser/history/history_browsertest.cc

Index: chrome/browser/history/history_browsertest.cc
diff --git a/chrome/browser/history/history_browsertest.cc b/chrome/browser/history/history_browsertest.cc
index a333e0489a76cadd00bbcd88b0e41171fa3f8f7f..82cbb9943468869d3ca9098878dd3b09561bb8d1 100644
--- a/chrome/browser/history/history_browsertest.cc
+++ b/chrome/browser/history/history_browsertest.cc
@@ -143,8 +143,6 @@ IN_PROC_BROWSER_TEST_F(HistoryBrowserTest, SavingHistoryEnabled) {
 
 // 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));
@@ -161,8 +159,6 @@ IN_PROC_BROWSER_TEST_F(HistoryBrowserTest, SavingHistoryDisabled) {
 // 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());