Remove the lifetime hack in ImageLoader where it keeps its assoc element alive

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 7da4824212e3148a8c16cdf5de5c0a7eefdf059f..744fc6ecadac60fd8f3e94308512490b7550bf4b 100644
--- a/third_party/WebKit/Source/core/svg/SVGImageElement.h
+++ b/third_party/WebKit/Source/core/svg/SVGImageElement.h
@@ -21,6 +21,7 @@
 #ifndef SVGImageElement_h
 #define SVGImageElement_h
 
+#include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/SVGNames.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedLength.h"
@@ -32,8 +33,7 @@
 
 namespace blink {
 
-class SVGImageElement final : public SVGGraphicsElement,
-                              public SVGURIReference {
+class SVGImageElement final : public SVGGraphicsElement, public SVGURIReference, public ActiveScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
     USING_GARBAGE_COLLECTED_MIXIN(SVGImageElement);
 public:
@@ -48,6 +48,8 @@ public:
     SVGAnimatedLength* height() const { return m_height.get(); }
     SVGAnimatedPreserveAspectRatio* preserveAspectRatio() { return m_preserveAspectRatio.get(); }
 
+    bool hasPendingActivity() const final { return imageLoader().hasPendingActivity(); }
+
     // Exposed for testing.
     ImageResource* cachedImage() const { return imageLoader().image(); }