Use IdTargetObserver in SVGFEImageElement

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

Index: third_party/WebKit/Source/core/svg/SVGFEImageElement.h
diff --git a/third_party/WebKit/Source/core/svg/SVGFEImageElement.h b/third_party/WebKit/Source/core/svg/SVGFEImageElement.h
index 111df6ac22726b50c2e8fcaccd42b2882ee8b01f..7d1c271c94be5d629b314d0f92528268ba5c1e6f 100644
--- a/third_party/WebKit/Source/core/svg/SVGFEImageElement.h
+++ b/third_party/WebKit/Source/core/svg/SVGFEImageElement.h
@@ -21,8 +21,6 @@
 #ifndef SVGFEImageElement_h
 #define SVGFEImageElement_h
 
-#include "core/SVGNames.h"
-#include "core/loader/resource/ImageResourceContent.h"
 #include "core/loader/resource/ImageResourceObserver.h"
 #include "core/svg/SVGAnimatedPreserveAspectRatio.h"
 #include "core/svg/SVGFilterPrimitiveStandardAttributes.h"
@@ -31,6 +29,8 @@
 
 namespace blink {
 
+class ImageResourceContent;
+
 class SVGFEImageElement final : public SVGFilterPrimitiveStandardAttributes,
                                 public SVGURIReference,
                                 public ImageResourceObserver {
@@ -62,6 +62,7 @@ class SVGFEImageElement final : public SVGFilterPrimitiveStandardAttributes,
 
   void clearResourceReferences();
   void fetchImageResource();
+  void clearImageResource();
 
   void buildPendingResource() override;
   InsertionNotificationRequest insertedInto(ContainerNode*) override;
@@ -70,6 +71,7 @@ class SVGFEImageElement final : public SVGFilterPrimitiveStandardAttributes,
   Member<SVGAnimatedPreserveAspectRatio> m_preserveAspectRatio;
 
   Member<ImageResourceContent> m_cachedImage;
+  Member<IdTargetObserver> m_targetIdObserver;
 };
 
 }  // namespace blink