Delete all use of tick_util.h.

webrtc/system_wrappers/source/condition_variable_unittest.cc

Index: webrtc/system_wrappers/source/condition_variable_unittest.cc
diff --git a/webrtc/system_wrappers/source/condition_variable_unittest.cc b/webrtc/system_wrappers/source/condition_variable_unittest.cc
index 4b1b6cc608998d8721323e1e19bb929e3b9c3c5c..85c56253e7b351d889ba215a4cdb151ff9734dbc 100644
--- a/webrtc/system_wrappers/source/condition_variable_unittest.cc
+++ b/webrtc/system_wrappers/source/condition_variable_unittest.cc
@@ -18,8 +18,8 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webrtc/base/platform_thread.h"
 #include "webrtc/base/scoped_ptr.h"
+#include "webrtc/base/timeutils.h"
 #include "webrtc/system_wrappers/include/critical_section_wrapper.h"
-#include "webrtc/system_wrappers/include/tick_util.h"
 #include "webrtc/system_wrappers/include/trace.h"
 
 namespace webrtc {
@@ -192,9 +192,9 @@ TEST(CondVarWaitTest, WaitingWaits) {
   InitializeCriticalSection(&crit_sect);
   ConditionVariableEventWin cond_var;
   EnterCriticalSection(&crit_sect);
-  int64_t start_ms = TickTime::MillisecondTimestamp();
+  int64_t start_ms = rtc::Time64();
   EXPECT_FALSE(cond_var.SleepCS(&crit_sect, kVeryShortWaitMs));
-  int64_t end_ms = TickTime::MillisecondTimestamp();
+  int64_t end_ms = rtc::Time64();
   EXPECT_LE(start_ms + kVeryShortWaitMs, end_ms)
       << "actual elapsed:" << end_ms - start_ms;
   LeaveCriticalSection(&crit_sect);