Use WTF::TimeDelta to specify delays on WebTaskRunner

third_party/WebKit/Source/platform/Timer.cpp

Index: third_party/WebKit/Source/platform/Timer.cpp
diff --git a/third_party/WebKit/Source/platform/Timer.cpp b/third_party/WebKit/Source/platform/Timer.cpp
index 5f543f0ff20b03ce8cc185ce618eac90807408cd..a1612d500de21ccf86b297c9e4f369a425b85fbd 100644
--- a/third_party/WebKit/Source/platform/Timer.cpp
+++ b/third_party/WebKit/Source/platform/Timer.cpp
@@ -137,11 +137,10 @@ void TimerBase::SetNextFireTime(double now, double delay) {
     // Cancel any previously posted task.
     weak_ptr_factory_.RevokeAll();
 
-    double delay_ms = 1000.0 * delay;
-    TimerTaskRunner()->PostDelayedTask(
+    TimerTaskRunner()->ToSingleThreadTaskRunner()->PostDelayedTask(
         location_,
         base::Bind(&TimerBase::RunInternal, weak_ptr_factory_.CreateWeakPtr()),
-        delay_ms);
+        TimeDelta::FromSecondsD(delay));
   }
 }