Move synchronously fetching to ResourceFetcher, as well as most of the logic

Source/core/fetch/FetchContext.cpp

Index: Source/core/fetch/FetchContext.cpp
diff --git a/Source/core/fetch/FetchContext.cpp b/Source/core/fetch/FetchContext.cpp
index e41c7f8dc73b35fffaa44a2334d0d69cc7f52ba0..037e629ab1d7f719a15fd1ed54b0b7ac6707762f 100644
--- a/Source/core/fetch/FetchContext.cpp
+++ b/Source/core/fetch/FetchContext.cpp
@@ -61,6 +61,10 @@ void FetchContext::dispatchWillSendRequest(DocumentLoader*, unsigned long, Resou
 {
 }
 
+void FetchContext::dispatchDidLoadResourceFromMemoryCache(const ResourceRequest&, const ResourceResponse&)
+{
+}
+
 void FetchContext::dispatchDidReceiveResponse(DocumentLoader*, unsigned long, const ResourceResponse&, ResourceLoader*)
 {
 }