Add platform/geometry pretty printers for logging and testing

third_party/WebKit/Source/platform/geometry/FloatPoint3D.h

 /*
     Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <wildfox@kde.org>
                   2004, 2005 Rob Buis <buis@kde.org>
                   2005 Eric Seidel <eric@webkit.org>
                   2010 Zoltan Herczeg <zherczeg@webkit.org>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 114 matching lines @@
         return result;
     }
 
     float lengthSquared() const { return this->dot(*this); }
     float length() const { return sqrtf(lengthSquared()); }
 
     float distanceTo(const FloatPoint3D& a) const;
 
     operator SkPoint3() const { return SkPoint3::Make(m_x, m_y, m_z); }
 
+    String toString() const;
+
 private:
     float m_x;
     float m_y;
     float m_z;
 };
 
 inline FloatPoint3D& operator +=(FloatPoint3D& a, const FloatPoint3D& b)
 {
     a.move(b.x(), b.y(), b.z());
     return a;
@@ skipping 46 matching lines @@
     return (*this - a).length();
 }
 
 // Redeclared here to avoid ODR issues.
 // See platform/testing/GeometryPrinters.h.
 void PrintTo(const FloatPoint3D&, std::ostream*);
 
 } // namespace blink
 
 #endif // FloatPoint3D_h