Avoid sending mixed-content requests for ImageSet contexts

third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 112 matching lines @@
 
   enum LoaderFinishType { kDidFinishLoading, kDidFinishFirstPartInMultipart };
   void HandleLoaderFinish(Resource*, double finish_time, LoaderFinishType);
   void HandleLoaderError(Resource*, const ResourceError&);
   bool IsControlledByServiceWorker() const;
 
   static const ResourceLoaderOptions& DefaultResourceOptions();
 
   String GetCacheIdentifier() const;
 
+  enum IsImageSet { kImageNotImageSet, kImageIsImageSet };
+
   WARN_UNUSED_RESULT static WebURLRequest::RequestContext
-  DetermineRequestContext(Resource::Type, bool is_main_frame);
+  DetermineRequestContext(Resource::Type, IsImageSet, bool is_main_frame);
   WARN_UNUSED_RESULT WebURLRequest::RequestContext DetermineRequestContext(
-      Resource::Type) const;
+      Resource::Type,
+      IsImageSet) const;
 
   void UpdateAllImageResourcePriorities();
 
   void ReloadLoFiImages();
 
   // Calling this method before main document resource is fetched is invalid.
   ResourceTimingInfo* GetNavigationTimingInfo();
 
   bool ContainsAsPreloadForTesting(Resource* resource) const {
     return preloads_.Contains(resource);
@@ skipping 126 matching lines @@
   }
 
  private:
   Member<ResourceFetcher> loader_;
   bool previous_state_;
 };
 
 }  // namespace blink
 
 #endif  // ResourceFetcher_h