[ServiceWorker] Set FetchRequestMode and handle wasFetchedViaServiceWorker.

Source/core/fetch/ResourceFetcher.cpp

Index: Source/core/fetch/ResourceFetcher.cpp
diff --git a/Source/core/fetch/ResourceFetcher.cpp b/Source/core/fetch/ResourceFetcher.cpp
index d2761cd2cddc17b34eb0117d803247edc33b0d42..a04f9d5b1fa91efdfd3512309e0355dcde98b488 100644
--- a/Source/core/fetch/ResourceFetcher.cpp
+++ b/Source/core/fetch/ResourceFetcher.cpp
@@ -615,6 +615,16 @@ bool ResourceFetcher::canAccessResource(Resource* resource, SecurityOrigin* sour
     return true;
 }
 
+bool ResourceFetcher::isControlledByServiceWorker()
+{
+    LocalFrame* localFrame = frame();
+    if (!localFrame)
+        return false;
+    if (!m_documentLoader)
+        return false;
+    return localFrame->loader().client()->isControlledByServiceWorker(*m_documentLoader);
+}
+
 bool ResourceFetcher::shouldLoadNewResource(Resource::Type type) const
 {
     if (!frame())