(Re-)introduce AncestorThrottle to handle 'X-Frame-Options'.

third_party/WebKit/Source/platform/network/ResourceError.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ResourceError_h
 #define ResourceError_h
 
+#include "net/base/net_errors.h"
 #include "platform/PlatformExport.h"
 #include "wtf/Allocator.h"
 #include "wtf/text/WTFString.h"
 #include <iosfwd>
 
 namespace blink {
 
 // Used for errors that won't be exposed to clients.
 PLATFORM_EXPORT extern const char errorDomainBlinkInternal[];
 
@@ skipping 52 matching lines @@
   void setStaleCopyInCache(bool staleCopyInCache) {
     m_staleCopyInCache = staleCopyInCache;
   }
   bool staleCopyInCache() const { return m_staleCopyInCache; }
 
   void setWasIgnoredByHandler(bool ignoredByHandler) {
     m_wasIgnoredByHandler = ignoredByHandler;
   }
   bool wasIgnoredByHandler() const { return m_wasIgnoredByHandler; }
 
+  bool wasBlockedByResponse() const {
+    return m_errorCode == net::ERR_BLOCKED_BY_RESPONSE;
+  }
+
   static bool compare(const ResourceError&, const ResourceError&);
 
  private:
   String m_domain;
   int m_errorCode;
   String m_failingURL;
   String m_localizedDescription;
   bool m_isNull;
   bool m_isCancellation;
   bool m_isAccessCheck;
   bool m_isTimeout;
   bool m_staleCopyInCache;
   bool m_wasIgnoredByHandler;
 };
 
 inline bool operator==(const ResourceError& a, const ResourceError& b) {
   return ResourceError::compare(a, b);
 }
 inline bool operator!=(const ResourceError& a, const ResourceError& b) {
   return !(a == b);
 }
 
 // Pretty printer for gtest. Declared here to avoid ODR violations.
 std::ostream& operator<<(std::ostream&, const ResourceError&);
 
 }  // namespace blink
 
 #endif  // ResourceError_h