Bug 1494604. Remove nsSVGUtils::NotifyAncestorsOfFilterRegionChange. r=longsonr

Differential Revision: https://phabricator.services.mozilla.com/D7072

--HG--
extra : rebase_source : 846bccfd360b0468047445459eb51b33a7cf507d
extra : amend_source : 0f7283efd3ea538de00573b9b5896f2f43ba0212

layout/svg/nsSVGContainerFrame.cpp

@@ -210,10 +210,6 @@ nsSVGDisplayContainerFrame::RemoveFrame(ChildListID aListID,
     mContent->AsElement(), nsRestyleHint(0), nsChangeHint_UpdateOverflow);
 
   nsSVGContainerFrame::RemoveFrame(aListID, aOldFrame);
-
-  if (!(GetStateBits() & (NS_FRAME_IS_NONDISPLAY | NS_STATE_IS_OUTER_SVG))) {
-    nsSVGUtils::NotifyAncestorsOfFilterRegionChange(this);
-  }
 }
 
 bool

layout/svg/nsSVGUtils.cpp

@@ -263,27 +263,6 @@ nsSVGUtils::NeedsReflowSVG(nsIFrame *aFrame)
   return NS_SUBTREE_DIRTY(aFrame);
 }
 
-void
-nsSVGUtils::NotifyAncestorsOfFilterRegionChange(nsIFrame *aFrame)
-{
-  MOZ_ASSERT(!(aFrame->GetStateBits() & NS_STATE_IS_OUTER_SVG),
-             "Not expecting to be called on the outer SVG Frame");
-
-  aFrame = aFrame->GetParent();
-
-  while (aFrame) {
-    if (aFrame->GetStateBits() & NS_STATE_IS_OUTER_SVG)
-      return;
-
-    SVGFilterObserverListForCSSProp* observers =
-      SVGObserverUtils::GetFilterObserverList(aFrame);
-    if (observers) {
-      observers->Invalidate();
-    }
-    aFrame = aFrame->GetParent();
-  }
-}
-
 Size
 nsSVGUtils::GetContextSize(const nsIFrame* aFrame)
 {

layout/svg/nsSVGUtils.h

@@ -228,11 +228,6 @@ public:
    */
   static bool NeedsReflowSVG(nsIFrame *aFrame);
 
-  /*
-   * Update the filter invalidation region for ancestor frames, if relevant.
-   */
-  static void NotifyAncestorsOfFilterRegionChange(nsIFrame *aFrame);
-
   /**
    * Percentage lengths in SVG are resolved against the width/height of the
    * nearest viewport (or its viewBox, if set). This helper returns the size