Add platform/geometry pretty printers for logging and testing

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

 /*
  * Copyright (c) 2012, 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 20 matching lines @@
 #ifndef LayoutPoint_h
 #define LayoutPoint_h
 
 #include "platform/geometry/DoublePoint.h"
 #include "platform/geometry/FloatPoint.h"
 #include "platform/geometry/LayoutSize.h"
 #include "wtf/Allocator.h"
 #include "wtf/Forward.h"
 #include "wtf/MathExtras.h"
 #include <algorithm>
+#include <iosfwd>
 
 namespace blink {
 
 class PLATFORM_EXPORT LayoutPoint {
     DISALLOW_NEW();
 public:
     LayoutPoint() { }
     LayoutPoint(LayoutUnit x, LayoutUnit y) : m_x(x), m_y(y) { }
     LayoutPoint(int x, int y) : m_x(LayoutUnit(x)), m_y(LayoutUnit(y)) { }
     LayoutPoint(const IntPoint& point) : m_x(point.x()), m_y(point.y()) { }
@@ skipping 33 matching lines @@
     void clampNegativeToZero()
     {
         *this = expandedTo(zero());
     }
 
     LayoutPoint transposedPoint() const
     {
         return LayoutPoint(m_y, m_x);
     }
 
-#ifndef NDEBUG
-    String toString() const;
-#endif
-
 private:
     LayoutUnit m_x, m_y;
 };
 
 ALWAYS_INLINE LayoutPoint& operator+=(LayoutPoint& a, const LayoutSize& b)
 {
     a.move(b.width(), b.height());
     return a;
 }
 
@@ skipping 129 matching lines @@
 inline LayoutSize toLayoutSize(const LayoutPoint& p)
 {
     return LayoutSize(p.x(), p.y());
 }
 
 inline LayoutPoint flooredLayoutPoint(const FloatSize& s)
 {
     return flooredLayoutPoint(FloatPoint(s));
 }
 
+PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const LayoutPoint&);
+
 } // namespace blink
 
 #endif // LayoutPoint_h