[Typed-OM] Add CSSStyleImageValue

third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.cpp

Index: third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.cpp
diff --git a/third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.cpp b/third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3f6a5c0ba3b60ddc465ce67fd99193080fca459a
--- /dev/null
+++ b/third_party/WebKit/Source/core/css/cssom/CSSStyleImageValue.cpp
@@ -0,0 +1,38 @@
+// 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 "core/css/cssom/CSSStyleImageValue.h"
+
+namespace blink {
+
+double CSSStyleImageValue::intrinsicWidth(bool& isNull)
+{
+    isNull = isCachePending();
+    if (isNull)
+        return 0;
+    return imageLayoutSize().width().toDouble();
+}
+
+double CSSStyleImageValue::intrinsicHeight(bool& isNull)
+{
+    isNull = isCachePending();
+    if (isNull)
+        return 0;
+    return imageLayoutSize().height().toDouble();
+}
+
+double CSSStyleImageValue::intrinsicRatio(bool& isNull)
+{
+    isNull = isCachePending();
+    if (isNull) {
+        return 0;
+    }
+    if (intrinsicHeight(isNull) == 0) {
+        isNull = true;
+        return 0;
+    }
+    return intrinsicWidth(isNull) / intrinsicHeight(isNull);
+}
+
+} // namespace blink