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

base/synchronization/condition_variable_unittest.cc

Index: base/synchronization/condition_variable_unittest.cc
diff --git a/base/synchronization/condition_variable_unittest.cc b/base/synchronization/condition_variable_unittest.cc
index 808ecdee38d1ab2729467ffd2cc15cfc4f2a1a6e..d3a53f284666011a269f7de11b2d4a391eeaee84 100644
--- a/base/synchronization/condition_variable_unittest.cc
+++ b/base/synchronization/condition_variable_unittest.cc
@@ -661,7 +661,7 @@ void WorkQueue::SpinUntilAllThreadsAreWaiting() {
       if (waiting_thread_count_ == thread_count_)
         break;
     }
-    PlatformThread::Sleep(30);
+    PlatformThread::Sleep(TimeDelta::FromMilliseconds(30));
   }
 }
 
@@ -672,7 +672,7 @@ void WorkQueue::SpinUntilTaskCountLessThan(int task_count) {
       if (task_count_ < task_count)
         break;
     }
-    PlatformThread::Sleep(30);
+    PlatformThread::Sleep(TimeDelta::FromMilliseconds(30));
   }
 }