Add ServiceWorker timing information on the popup panel in DevTools's Network tab (1/2)

public/platform/WebURLLoadTiming.h

Index: public/platform/WebURLLoadTiming.h
diff --git a/public/platform/WebURLLoadTiming.h b/public/platform/WebURLLoadTiming.h
index 2061a09427eb5e21203510e50c7229f83046f84a..81793c6a3610d3528eab6b479845e859068b8d12 100644
--- a/public/platform/WebURLLoadTiming.h
+++ b/public/platform/WebURLLoadTiming.h
@@ -78,6 +78,15 @@ public:
     BLINK_PLATFORM_EXPORT double connectEnd() const;
     BLINK_PLATFORM_EXPORT void setConnectEnd(double);
 
+    BLINK_PLATFORM_EXPORT double serviceWorkerFetchStart() const;
+    BLINK_PLATFORM_EXPORT void setServiceWorkerFetchStart(double);
+
+    BLINK_PLATFORM_EXPORT double serviceWorkerFetchReady() const;
+    BLINK_PLATFORM_EXPORT void setServiceWorkerFetchReady(double);
+
+    BLINK_PLATFORM_EXPORT double serviceWorkerFetchEnd() const;
+    BLINK_PLATFORM_EXPORT void setServiceWorkerFetchEnd(double);
+
     BLINK_PLATFORM_EXPORT double sendStart() const;
     BLINK_PLATFORM_EXPORT void setSendStart(double);