Move the code in ResourceFetcher handling calls from WebURLLoaderImpl to ResourceLoader

third_party/WebKit/Source/core/fetch/FetchContext.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 35 matching lines @@
 class KURL;
 class MHTMLArchive;
 class ResourceError;
 class ResourceResponse;
 class ResourceTimingInfo;
 class WebTaskRunner;
 enum class WebCachePolicy;
 
 enum FetchResourceType { FetchMainResource, FetchSubresource };
 
+// The FetchContext is an interface for performing context specific processing
+// in response to events in the ResourceFetcher. The ResourceFetcher or its job
+// class, ResourceLoader, may call the methods on a FetchContext.
+//
+// Any processing that depends on core/ components outside core/fetch/ should
+// be implemented on a subclass of this interface, and then exposed to the
+// ResourceFetcher via this interface.
 class CORE_EXPORT FetchContext
     : public GarbageCollectedFinalized<FetchContext> {
   WTF_MAKE_NONCOPYABLE(FetchContext);
 
  public:
   enum LogMessageType { LogErrorMessage, LogWarningMessage };
 
   static FetchContext& nullInstance();
 
   virtual ~FetchContext() {}
@@ skipping 104 matching lines @@
 
   virtual WebTaskRunner* loadingTaskRunner() const { return nullptr; }
 
  protected:
   FetchContext() {}
 };
 
 }  // namespace blink
 
 #endif