Add platform/geometry pretty printers for logging and testing

third_party/WebKit/Source/platform/geometry/FloatPoint.cpp

Index: third_party/WebKit/Source/platform/geometry/FloatPoint.cpp
diff --git a/third_party/WebKit/Source/platform/geometry/FloatPoint.cpp b/third_party/WebKit/Source/platform/geometry/FloatPoint.cpp
index c7b8cd475682decdbaa467a3e8174e1ac1bfa96f..440a4a3da7c69fbb04786abff6f198f8289e722b 100644
--- a/third_party/WebKit/Source/platform/geometry/FloatPoint.cpp
+++ b/third_party/WebKit/Source/platform/geometry/FloatPoint.cpp
@@ -31,9 +31,9 @@
 #include "platform/geometry/DoublePoint.h"
 #include "platform/geometry/LayoutPoint.h"
 #include "platform/geometry/LayoutSize.h"
-#include "wtf/text/WTFString.h"
 #include <limits>
 #include <math.h>
+#include <ostream> // NOLINT
 
 namespace blink {
 
@@ -114,11 +114,12 @@ bool findIntersection(const FloatPoint& p1, const FloatPoint& p2, const FloatPoi
     return true;
 }
 
-#ifndef NDEBUG
-String FloatPoint::toString() const
+std::ostream& operator<<(std::ostream& os, const FloatPoint& point)
 {
-    return String::format("%f,%f", x(), y());
+    os << "FloatPoint("
+        << "x=" << point.x() << ", "
+        << "y=" << point.y() << ")";
+    return os;
 }
-#endif
 
 } // namespace blink