Break StyleImage dependency on LayoutObject

third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp

Index: third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp b/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
index 81e6a82df4bc18a1bd3e4d65b91d3a4409d06a14..adce4fbd8d94cfedf844f6dc2a84e0e9b06b72ab 100644
--- a/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
+++ b/third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp
@@ -219,12 +219,14 @@ void CSSCrossfadeValue::LoadSubimages(const Document& document) {
   crossfade_subimage_observer_.SetReady(true);
 }
 
-PassRefPtr<Image> CSSCrossfadeValue::GetImage(const LayoutObject& layout_object,
-                                              const IntSize& size) {
+PassRefPtr<Image> CSSCrossfadeValue::GetImage(
+    const ImageResourceObserver& client,
+    const Document& document,
+    const ComputedStyle&,
+    const IntSize& size) {
   if (size.IsEmpty())
     return nullptr;
 
-  const Document& document = layout_object.GetDocument();
   Image* from_image = RenderableImageForCSSValue(from_value_.Get(), document);
   Image* to_image = RenderableImageForCSSValue(to_value_.Get(), document);
 
@@ -249,14 +251,15 @@ PassRefPtr<Image> CSSCrossfadeValue::GetImage(const LayoutObject& layout_object,
 
 void CSSCrossfadeValue::CrossfadeChanged(const IntRect&) {
   for (const auto& curr : Clients()) {
-    LayoutObject* client = const_cast<LayoutObject*>(curr.key);
+    ImageResourceObserver* client =
+        const_cast<ImageResourceObserver*>(curr.key);
     client->ImageChanged(static_cast<WrappedImagePtr>(this));
   }
 }
 
 bool CSSCrossfadeValue::WillRenderImage() const {
   for (const auto& curr : Clients()) {
-    if (const_cast<LayoutObject*>(curr.key)->WillRenderImage())
+    if (const_cast<ImageResourceObserver*>(curr.key)->WillRenderImage())
       return true;
   }
   return false;