Update from https://crrev.com/333737

cc/debug/lap_timer.cc

Index: cc/debug/lap_timer.cc
diff --git a/cc/debug/lap_timer.cc b/cc/debug/lap_timer.cc
index 10d26f94f4de514b0094b464efeec0dddf7a37f1..347e3a52d66a443ab401643de8d54e3aa0616f58 100644
--- a/cc/debug/lap_timer.cc
+++ b/cc/debug/lap_timer.cc
@@ -10,9 +10,10 @@ namespace cc {
 
 namespace {
 
-base::TimeTicks Now() {
-  return base::TimeTicks::IsThreadNowSupported() ? base::TimeTicks::ThreadNow()
-                                                 : base::TimeTicks::Now();
+base::TimeDelta Now() {
+  return base::ThreadTicks::IsSupported()
+             ? base::ThreadTicks::Now() - base::ThreadTicks()
+             : base::TimeTicks::Now() - base::TimeTicks();
 }
 
 }  // namespace
@@ -54,7 +55,7 @@ void LapTimer::NextLap() {
   ++num_laps_;
   --remaining_no_check_laps_;
   if (!remaining_no_check_laps_) {
-    base::TimeTicks now = Now();
+    base::TimeDelta now = Now();
     accumulator_ += now - start_time_;
     start_time_ = now;
     remaining_no_check_laps_ = check_interval_;