Add Double{Size, Point, Rect} pretty printers for logging and testing

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

 
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef DoublePoint_h
 #define DoublePoint_h
 
 #include "platform/geometry/DoubleSize.h"
 #include "platform/geometry/FloatPoint.h"
 #include "platform/geometry/IntPoint.h"
@@ skipping 81 matching lines @@
     {
         m_x *= sx;
         m_y *= sy;
     }
 
     DoublePoint scaledBy(float scale) const
     {
         return DoublePoint(m_x * scale, m_y * scale);
     }
 
-#ifndef NDEBUG
     String toString() const;
-#endif
 
 private:
     double m_x, m_y;
 };
 
 inline bool operator==(const DoublePoint& a, const DoublePoint& b)
 {
     return a.x() == b.x() && a.y() == b.y();
 }
 
@@ skipping 54 matching lines @@
 inline FloatPoint toFloatPoint(const DoublePoint& a)
 {
     return FloatPoint(a.x(), a.y());
 }
 
 inline DoubleSize toDoubleSize(const DoublePoint& a)
 {
     return DoubleSize(a.x(), a.y());
 }
 
+// Redeclared here to avoid ODR issues.
+// See platform/testing/GeometryPrinters.h.
+void PrintTo(const DoublePoint&, std::ostream*);
+
 } // namespace blink
 
 #endif