Add platform/geometry pretty printers for logging and testing

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

Index: third_party/WebKit/Source/platform/geometry/FloatRoundedRectTest.cpp
diff --git a/third_party/WebKit/Source/platform/geometry/FloatRoundedRectTest.cpp b/third_party/WebKit/Source/platform/geometry/FloatRoundedRectTest.cpp
index 272417ab0615ad78d6bd0709333fa90cf866391a..bb95217e6c64df95c574f3bb54e80da4a61c01d6 100644
--- a/third_party/WebKit/Source/platform/geometry/FloatRoundedRectTest.cpp
+++ b/third_party/WebKit/Source/platform/geometry/FloatRoundedRectTest.cpp
@@ -30,6 +30,7 @@
 #include "platform/geometry/FloatRoundedRect.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
+#include "wtf/text/WTFString.h"
 
 namespace blink {
 
@@ -173,5 +174,12 @@ TEST(FloatRoundedRectTest, radiusCenterRect)
     EXPECT_TRUE(r2.radiusCenterRect().isEmpty());
 }
 
+TEST(FloatRoundedRectTest, ToString)
+{
+    FloatSize cornerRect(1, 2);
+    FloatRoundedRect roundedRect(FloatRect(3, 5, 7, 11), FloatRoundedRect::Radii(cornerRect, cornerRect, cornerRect, cornerRect));
+    EXPECT_EQ(String("3,5 7x11 radii:(tl:1x2; tr:1x2; bl:1x2; br:1x2)"), roundedRect.toString());
+}
+
 } // namespace blink