Revert "Prepare blink to unify definitions of load completion"

Source/core/fetch/ResourceLoaderHost.h

Index: Source/core/fetch/ResourceLoaderHost.h
diff --git a/Source/core/fetch/ResourceLoaderHost.h b/Source/core/fetch/ResourceLoaderHost.h
index 23861349b56493eb1a229d798654d9d4d8102a34..3062ea8bbd01964abedcd089cf916d4318116cee 100644
--- a/Source/core/fetch/ResourceLoaderHost.h
+++ b/Source/core/fetch/ResourceLoaderHost.h
@@ -47,10 +47,10 @@ class ResourceLoaderHost : public WillBeGarbageCollectedMixin {
 public:
     virtual void incrementRequestCount(const Resource*) = 0;
     virtual void decrementRequestCount(const Resource*) = 0;
-    virtual void didLoadResource() = 0;
+    virtual void didLoadResource(Resource*) = 0;
     virtual void redirectReceived(Resource*, const ResourceResponse&) = 0;
 
-    virtual void didFinishLoading(Resource*, double finishTime, int64_t encodedDataLength) = 0;
+    virtual void didFinishLoading(const Resource*, double finishTime, int64_t encodedDataLength) = 0;
     virtual void didChangeLoadingPriority(const Resource*, ResourceLoadPriority, int intraPriorityValue) = 0;
     virtual void didFailLoading(const Resource*, const ResourceError&) = 0;