Make prepareRequest() a separate callback of FetchContext

third_party/WebKit/Source/core/loader/appcache/ApplicationCacheHost.h

 /*
  * Copyright (c) 2009, 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 106 matching lines @@
     bool m_isForeign;
     bool m_isExplicit;
     long long m_size;
   };
 
   typedef Vector<ResourceInfo> ResourceInfoList;
 
   void selectCacheWithoutManifest();
   void selectCacheWithManifest(const KURL& manifestURL);
 
-  void willStartLoadingMainResource(ResourceRequest&);
+  // Annotate request for ApplicationCache. This internally calls
+  // willStartLoadingMainResource if it's for frame resource or
+  // willStartLoadingResource for subresource requests.
+  void willStartLoading(ResourceRequest&);
+
   void didReceiveResponseForMainResource(const ResourceResponse&);
   void mainResourceDataReceived(const char* data, size_t length);
   void finishedLoadingMainResource();
   void failedLoadingMainResource();
 
-  void willStartLoadingResource(ResourceRequest&);
-
   Status getStatus() const;
   bool update();
   bool swapCache();
   void abort();
 
   void setApplicationCache(ApplicationCache*);
   void notifyApplicationCache(EventID,
                               int progressTotal,
                               int progressDone,
                               WebApplicationCacheHost::ErrorReason,
                               const String& errorURL,
                               int errorStatus,
                               const String& errorMessage);
 
   void
   stopDeferringEvents();  // Also raises the events that have been queued up.
 
   void fillResourceList(ResourceInfoList*);
   CacheInfo applicationCacheInfo();
 
   DECLARE_TRACE();
 
  private:
   explicit ApplicationCacheHost(DocumentLoader*);
 
+  void willStartLoadingMainResource(ResourceRequest&);
+  void willStartLoadingResource(ResourceRequest&);
+
   // WebApplicationCacheHostClient implementation
   void didChangeCacheAssociation() final;
   void notifyEventListener(WebApplicationCacheHost::EventID) final;
   void notifyProgressEventListener(const WebURL&,
                                    int progressTotal,
                                    int progressDone) final;
   void notifyErrorEventListener(WebApplicationCacheHost::ErrorReason,
                                 const WebURL&,
                                 int status,
                                 const WebString& message) final;
@@ skipping 37 matching lines @@
                         const String& errorURL,
                         int errorStatus,
                         const String& errorMessage);
 
   std::unique_ptr<WebApplicationCacheHost> m_host;
 };
 
 }  // namespace blink
 
 #endif  // ApplicationCacheHost_h