Bug 1488700 p8. Rename CanvasFilterChainObserver to SVGFilterObserverListForCanvas. r=longsonr

Differential Revision: https://phabricator.services.mozilla.com/D5620

--HG--
extra : rebase_source : be77b64ac95430c723af3016dabcd2b0258f3eeb

dom/canvas/CanvasRenderingContext2D.cpp

@@ -958,12 +958,12 @@ private:
   CanvasRenderingContext2D* mContext;
 };
 
-class CanvasFilterChainObserver : public SVGFilterObserverList
+class SVGFilterObserverListForCanvas final : public SVGFilterObserverList
 {
 public:
-  CanvasFilterChainObserver(nsTArray<nsStyleFilter>& aFilters,
-                            Element* aCanvasElement,
-                            CanvasRenderingContext2D* aContext)
+  SVGFilterObserverListForCanvas(nsTArray<nsStyleFilter>& aFilters,
+                                 Element* aCanvasElement,
+                                 CanvasRenderingContext2D* aContext)
     : SVGFilterObserverList(aFilters, aCanvasElement)
     , mContext(aContext)
   {
@@ -1005,7 +1005,7 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CanvasRenderingContext2D)
     ImplCycleCollectionUnlink(tmp->mStyleStack[i].gradientStyles[Style::STROKE]);
     ImplCycleCollectionUnlink(tmp->mStyleStack[i].gradientStyles[Style::FILL]);
     auto filterObserverList =
-      static_cast<CanvasFilterChainObserver*>(tmp->mStyleStack[i].filterObserverList.get());
+      static_cast<SVGFilterObserverListForCanvas*>(tmp->mStyleStack[i].filterObserverList.get());
     if (filterObserverList) {
       filterObserverList->DetachFromContext();
     }
@@ -2826,8 +2826,8 @@ CanvasRenderingContext2D::SetFilter(const nsAString& aFilter, ErrorResult& aErro
     filterChain.SwapElements(CurrentState().filterChain);
     if (mCanvasElement) {
       CurrentState().filterObserverList =
-        new CanvasFilterChainObserver(CurrentState().filterChain,
-                                      mCanvasElement, this);
+        new SVGFilterObserverListForCanvas(CurrentState().filterChain,
+                                           mCanvasElement, this);
       UpdateFilter();
     }
   }

dom/canvas/CanvasRenderingContext2D.h

@@ -45,7 +45,7 @@ class ImageData;
 class StringOrCanvasGradientOrCanvasPattern;
 class OwningStringOrCanvasGradientOrCanvasPattern;
 class TextMetrics;
-class CanvasFilterChainObserver;
+class SVGFilterObserverListForCanvas;
 class CanvasPath;
 
 extern const mozilla::gfx::Float SIGMA_MAX;
@@ -1162,7 +1162,7 @@ protected:
   }
 
   friend class CanvasGeneralPattern;
-  friend class CanvasFilterChainObserver;
+  friend class SVGFilterObserverListForCanvas;
   friend class AdjustedTarget;
   friend class AdjustedTargetForShadow;
   friend class AdjustedTargetForFilter;