Revert of Tracking filter mutation via SVGElementProxy

third_party/WebKit/Source/core/paint/PaintLayer.h

Index: third_party/WebKit/Source/core/paint/PaintLayer.h
diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.h b/third_party/WebKit/Source/core/paint/PaintLayer.h
index 53bd98539ccbc8b4e7240b61cd5acacfa88f8989..21f32a0bed73a086d96b347bfeae2a616dfc2bf3 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.h
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.h
@@ -67,7 +67,6 @@
 class CompositedLayerMapping;
 class CompositorFilterOperations;
 class ComputedStyle;
-class FilterEffect;
 class FilterOperations;
 class HitTestResult;
 class HitTestingTransformState;
@@ -482,6 +481,8 @@
            layoutObject()->style()->preserves3D();
   }
 
+  void filterNeedsPaintInvalidation();
+
   // Returns |true| if any property that renders using filter operations is
   // used (including, but not limited to, 'filter' and 'box-reflect').
   bool hasFilterInducingProperty() const {
@@ -598,7 +599,6 @@
     return m_rareData ? m_rareData->filterInfo.get() : nullptr;
   }
   PaintLayerFilterInfo& ensureFilterInfo();
-  void removeFilterInfo();
 
   void updateFilters(const ComputedStyle* oldStyle,
                      const ComputedStyle& newStyle);
@@ -830,6 +830,8 @@
   void setShouldIsolateCompositedDescendants(bool);
 
   void updateDescendantDependentFlags();
+
+  void updateOrRemoveFilterEffect();
 
   void updateSelfPaintingLayer();
   // This is O(depth) so avoid calling this in loops. Instead use optimizations
@@ -1083,6 +1085,7 @@
   void updateStackingNode();
 
   FilterOperations addReflectionToFilterOperations(const ComputedStyle&) const;
+  FilterEffect* updateFilterEffect() const;
 
   // FIXME: We could lazily allocate our ScrollableArea based on style
   // properties ('overflow', ...) but for now, we are always allocating it for
@@ -1098,6 +1101,8 @@
                        const ComputedStyle& newStyle);
 
   void removeAncestorOverflowLayer(const PaintLayer* removedLayer);
+
+  void updateOrRemoveFilterClients();
 
   void updatePaginationRecursive(bool needsPaginationUpdate = false);
   void clearPaginationRecursive();