Switch from PrintTo to operator<< for platform printers

third_party/WebKit/Source/platform/geometry/IntPoint.h

 /*
  * Copyright (C) 2004, 2005, 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 146 matching lines @@
 inline IntSize toIntSize(const IntPoint& a)
 {
     return IntSize(a.x(), a.y());
 }
 
 inline int IntPoint::distanceSquaredToPoint(const IntPoint& point) const
 {
     return ((*this) - point).diagonalLengthSquared();
 }
 
-// Redeclared here to avoid ODR issues.
-// See platform/testing/GeometryPrinters.h.
-void PrintTo(const IntPoint&, std::ostream*);
+PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const IntPoint&);
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::IntPoint);
 
 #endif // IntPoint_h