Add workerReady timing for ServiceWorker controlled requests [1/3]

Source/platform/exported/WebURLLoadTiming.cpp

Index: Source/platform/exported/WebURLLoadTiming.cpp
diff --git a/Source/platform/exported/WebURLLoadTiming.cpp b/Source/platform/exported/WebURLLoadTiming.cpp
index 2a2226258fc3e113f0bee86690dc8b263cb80e2f..0f44cdc91859914aea7b13b8e22f76403dff743c 100644
--- a/Source/platform/exported/WebURLLoadTiming.cpp
+++ b/Source/platform/exported/WebURLLoadTiming.cpp
@@ -131,6 +131,16 @@ void WebURLLoadTiming::setWorkerStart(double start)
     m_private->setWorkerStart(start);
 }
 
+double WebURLLoadTiming::workerReady() const
+{
+    return m_private->workerReady();
+}
+
+void WebURLLoadTiming::setWorkerReady(double ready)
+{
+    m_private->setWorkerReady(ready);
+}
+
 double WebURLLoadTiming::sendStart() const
 {
     return m_private->sendStart();