Add platform/geometry pretty printers for logging and testing

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

Index: third_party/WebKit/Source/platform/geometry/LayoutSize.cpp
diff --git a/third_party/WebKit/Source/platform/geometry/LayoutSize.cpp b/third_party/WebKit/Source/platform/geometry/LayoutSize.cpp
index 0899546b38b799731e6ddd71364e0b0ed0525785..2a1c231a8352a3e19ec45dd7cd1541fc82211fed 100644
--- a/third_party/WebKit/Source/platform/geometry/LayoutSize.cpp
+++ b/third_party/WebKit/Source/platform/geometry/LayoutSize.cpp
@@ -8,11 +8,11 @@
 
 namespace blink {
 
-#ifndef NDEBUG
 String LayoutSize::toString() const
 {
-    return String::format("%fx%f", width().toDouble(), height().toDouble());
+    return String::format("%sx%s",
+        width().toString().ascii().data(),
+        height().toString().ascii().data());
 }
-#endif
 
 } // namespace blink