[LoaderTest] Add the gtest pretty printer for ResourceError

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
@@ skipping 12 matching lines @@
  * (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 "platform/PlatformExport.h"
 #include "wtf/Allocator.h"
 #include "wtf/text/WTFString.h"
+#include <iosfwd>
 
 namespace blink {
 
 PLATFORM_EXPORT extern const char errorDomainBlinkInternal[]; // Used for errors that won't be exposed to clients.
 
 class PLATFORM_EXPORT ResourceError final {
     DISALLOW_NEW();
 public:
     static ResourceError cancelledError(const String& failingURL);
     static ResourceError cancelledDueToAccessCheckError(const String& failingURL);
@@ skipping 58 matching lines @@
     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