NOT FOR LANDING Allocate SVGImageForContainer on demand

third_party/WebKit/Source/core/svg/SVGImageElement.h

Index: third_party/WebKit/Source/core/svg/SVGImageElement.h
diff --git a/third_party/WebKit/Source/core/svg/SVGImageElement.h b/third_party/WebKit/Source/core/svg/SVGImageElement.h
index 8373158ac7548968950b9bc3ae058cfc094fb9a4..cdc42828c2a15322eb81f34baa447601c2f2e44e 100644
--- a/third_party/WebKit/Source/core/svg/SVGImageElement.h
+++ b/third_party/WebKit/Source/core/svg/SVGImageElement.h
@@ -51,6 +51,8 @@ public:
     // Exposed for testing.
     ImageResource* cachedImage() const { return imageLoader().image(); }
 
+    const AtomicString imageSourceURL() const override;
+
 private:
     explicit SVGImageElement(Document&);
 
@@ -67,8 +69,6 @@ private:
 
     LayoutObject* createLayoutObject(const ComputedStyle&) override;
 
-    const AtomicString imageSourceURL() const override;
-
     bool haveLoadedRequiredResources() override;
 
     bool selfHasRelativeLengths() const override;