Avoid RefPtr churn

third_party/WebKit/Source/core/layout/LayoutImageResource.cpp

Index: third_party/WebKit/Source/core/layout/LayoutImageResource.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutImageResource.cpp b/third_party/WebKit/Source/core/layout/LayoutImageResource.cpp
index e19a029d4c8d6fe5c6497ebf49887f9cd0e3639c..047dd95126a762ba7a3c974b76467e47439a4647 100644
--- a/third_party/WebKit/Source/core/layout/LayoutImageResource.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutImageResource.cpp
@@ -102,18 +102,20 @@ LayoutSize LayoutImageResource::imageSize(float multiplier) const
 
 PassRefPtr<Image> LayoutImageResource::image(const IntSize& containerSize, float zoom) const
 {
-    RefPtr<Image> image = m_cachedImage ? m_cachedImage->image() : Image::nullImage();
-    if (image->isSVGImage()) {
-        KURL url;
-        SVGImage* svgImage = toSVGImage(image.get());
-        Node* node = m_layoutObject->node();
-        if (node && node->isElementNode()) {
-            const AtomicString& urlString = toElement(node)->imageSourceURL();
-            url = node->document().completeURL(urlString);
-        }
-        return SVGImageForContainer::create(svgImage, containerSize, zoom, url);
+    if (!m_cachedImage)
+        return Image::nullImage();
+
+    if (!m_cachedImage->image()->isSVGImage())
+        return m_cachedImage->image();
+
+    KURL url;
+    SVGImage* svgImage = toSVGImage(m_cachedImage->image());
+    Node* node = m_layoutObject->node();
+    if (node && node->isElementNode()) {
+        const AtomicString& urlString = toElement(node)->imageSourceURL();
+        url = node->document().completeURL(urlString);
     }
-    return image;
+    return SVGImageForContainer::create(svgImage, containerSize, zoom, url);
 }
 
 bool LayoutImageResource::maybeAnimated() const