Add platform/geometry pretty printers for logging and testing

third_party/WebKit/Source/platform/LayoutUnit.cpp

Index: third_party/WebKit/Source/platform/LayoutUnit.cpp
diff --git a/third_party/WebKit/Source/platform/LayoutUnit.cpp b/third_party/WebKit/Source/platform/LayoutUnit.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..53f301424f83d9923b2482f236ee9e6d1e1acb77
--- /dev/null
+++ b/third_party/WebKit/Source/platform/LayoutUnit.cpp
@@ -0,0 +1,24 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "platform/LayoutUnit.h"
+
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+String LayoutUnit::toString() const
+{
+    if (m_value == LayoutUnit::max().rawValue())
+        return "LayoutUnit::max(" + String::number(toDouble()) + ")";
+    if (m_value == LayoutUnit::min().rawValue())
+        return "LayoutUnit::min(" + String::number(toDouble()) + ")";
+    if (m_value == LayoutUnit::nearlyMax().rawValue())
+        return "LayoutUnit::nearlyMax(" + String::number(toDouble()) + ")";
+    if (m_value == LayoutUnit::nearlyMin().rawValue())
+        return "LayoutUnit::nearlyMin(" + String::number(toDouble()) + ")";
+    return String::number(toDouble());
+}
+
+} // namespace blink