Change code in base (primarily unit tests) to use Sleep(TimeDelta).

base/threading/watchdog_unittest.cc

Index: base/threading/watchdog_unittest.cc
diff --git a/base/threading/watchdog_unittest.cc b/base/threading/watchdog_unittest.cc
index f96487b4dad414d4677374eb1eebaf01ae4a2afd..ed4cac98e14c09d2a5ffb397ccf4dfbd6a935854 100644
--- a/base/threading/watchdog_unittest.cc
+++ b/base/threading/watchdog_unittest.cc
@@ -99,7 +99,7 @@ TEST_F(WatchdogTest, ConstructorDisabledTest) {
   WatchdogCounter watchdog(TimeDelta::FromMilliseconds(10), "Disabled", false);
   watchdog.Arm();
   // Alarm should not fire, as it was disabled.
-  PlatformThread::Sleep(500);
+  PlatformThread::Sleep(TimeDelta::FromMilliseconds(500));
   EXPECT_EQ(0, watchdog.alarm_counter());
 }
 
@@ -109,7 +109,8 @@ TEST_F(WatchdogTest, DisarmTest) {
 
   TimeTicks start = TimeTicks::Now();
   watchdog.Arm();
-  PlatformThread::Sleep(100);  // Sleep a bit, but not past the alarm point.
+  // Sleep a bit, but not past the alarm point.
+  PlatformThread::Sleep(TimeDelta::FromMilliseconds(100));
   watchdog.Disarm();
   TimeTicks end = TimeTicks::Now();
 
@@ -124,7 +125,7 @@ TEST_F(WatchdogTest, DisarmTest) {
 
   // Sleep past the point where it would have fired if it wasn't disarmed,
   // and verify that it didn't fire.
-  PlatformThread::Sleep(1000);
+  PlatformThread::Sleep(TimeDelta::FromSeconds(1));
   EXPECT_EQ(0, watchdog.alarm_counter());
 
   // ...but even after disarming, we can still use the alarm...