Skeleton of the Safe Browsing Subresource Filter.

third_party/WebKit/Source/web/WebDataSourceImpl.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 48 matching lines @@
     bool hasUnreachableURL() const override;
     WebURL unreachableURL() const override;
     void appendRedirect(const WebURL&) override;
     void redirectChain(WebVector<WebURL>&) const override;
     bool isClientRedirect() const override;
     bool replacesCurrentHistoryItem() const override;
     WebNavigationType navigationType() const override;
     ExtraData* getExtraData() const override;
     void setExtraData(ExtraData*) override;
     void setNavigationStartTime(double) override;
+    void setSubresourceFilter(WebDocumentSubresourceFilter*) override;

[Mike West, 2016/06/01 13:43:18]

Please add a comment about the lifetime/ownership considerations here.

[engedy, 2016/06/02 23:07:19]

Just to make sure we are on the same page, there is a comment at the declaration
in the WebDataSource interface. Any chance you had written this comment before
you got there?

 
     static WebNavigationType toWebNavigationType(NavigationType);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     WebDataSourceImpl(LocalFrame*, const ResourceRequest&, const SubstituteData&);
     ~WebDataSourceImpl() override;
     void detachFromFrame() override;
     String debugName() const override { return "WebDataSourceImpl"; }
 
     // Mutable because the const getters will magically sync these to the
     // latest version from WebKit.
     mutable WrappedResourceRequest m_originalRequestWrapper;
     mutable WrappedResourceRequest m_requestWrapper;
     mutable WrappedResourceResponse m_responseWrapper;
 
     OwnPtr<ExtraData> m_extraData;
 };
 
 } // namespace blink
 
 #endif  // WebDataSourceImpl_h