Drop ImageLoader::sourceURI

Source/core/svg/SVGImageLoader.cpp

Index: Source/core/svg/SVGImageLoader.cpp
diff --git a/Source/core/svg/SVGImageLoader.cpp b/Source/core/svg/SVGImageLoader.cpp
index 338cfd04bc7729675132c68e93a32a06dccf5edc..888d674d8b5017cba2f370c8b8209cc6b155e921 100644
--- a/Source/core/svg/SVGImageLoader.cpp
+++ b/Source/core/svg/SVGImageLoader.cpp
@@ -19,12 +19,10 @@
  */
 
 #include "config.h"
-
 #include "core/svg/SVGImageLoader.h"
 
 #include "core/events/Event.h"
 #include "core/fetch/ImageResource.h"
-#include "core/html/parser/HTMLParserIdioms.h"
 #include "core/svg/SVGImageElement.h"
 
 namespace blink {
@@ -44,12 +42,4 @@ void SVGImageLoader::dispatchLoadEvent()
     }
 }
 
-String SVGImageLoader::sourceURI(const AtomicString& attribute) const
-{
-    KURL base = element()->baseURI();
-    if (!base.isValid())
-        base = element()->document().baseURI();
-    return element()->document().completeURLWithOverride(stripLeadingAndTrailingHTMLSpaces(attribute), base);
-}
-
 }