Bug 1866384 - remove unused or obsolete code r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D194582

dom/base/Document.cpp

@@ -1351,7 +1351,6 @@ Document::Document(const char* aContentType)
       mIsSVGGlyphsDocument(false),
       mInDestructor(false),
       mIsGoingAway(false),
-      mInXBLUpdate(false),
       mStyleSetFilled(false),
       mQuirkSheetAdded(false),
       mContentEditableSheetAdded(false),

dom/base/Document.h

@@ -4684,8 +4684,6 @@ class Document : public nsINode,
   // True if the document has been detached from its content viewer.
   bool mIsGoingAway : 1;
 
-  bool mInXBLUpdate : 1;
-
   // Whether we have filled our style set with all the stylesheets.
   bool mStyleSetFilled : 1;
 

dom/svg/SVGUseElement.cpp

@@ -60,7 +60,6 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(SVGUseElement)
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SVGUseElement,
                                                 SVGUseElementBase)
-  nsAutoScriptBlocker scriptBlocker;
   NS_IMPL_CYCLE_COLLECTION_UNLINK(mOriginal)
   tmp->UnlinkSource();
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
@@ -118,7 +117,6 @@ void SVGUseElement::ProcessAttributeChange(int32_t aNamespaceID,
     if (auto* frame = GetFrame()) {
       frame->HrefChanged();
     }
-    mOriginal = nullptr;
     UnlinkSource();
     TriggerReclone();
   }

layout/svg/SVGForeignObjectFrame.cpp

@@ -42,7 +42,7 @@ NS_IMPL_FRAMEARENA_HELPERS(SVGForeignObjectFrame)
 
 SVGForeignObjectFrame::SVGForeignObjectFrame(ComputedStyle* aStyle,
                                              nsPresContext* aPresContext)
-    : nsContainerFrame(aStyle, aPresContext, kClassID), mInReflow(false) {
+    : nsContainerFrame(aStyle, aPresContext, kClassID) {
   AddStateBits(NS_FRAME_REFLOW_ROOT | NS_FRAME_MAY_BE_TRANSFORMED |
                NS_FRAME_SVG_LAYOUT | NS_FRAME_FONT_INFLATION_CONTAINER |
                NS_FRAME_FONT_INFLATION_FLOW_ROOT);
@@ -412,8 +412,6 @@ void SVGForeignObjectFrame::DoReflow() {
   UniquePtr<gfxContext> renderingContext =
       presContext->PresShell()->CreateReferenceRenderingContext();
 
-  mInReflow = true;
-
   WritingMode wm = kid->GetWritingMode();
   ReflowInput reflowInput(presContext, kid, renderingContext.get(),
                           LogicalSize(wm, ISize(wm), NS_UNCONSTRAINEDSIZE));
@@ -438,8 +436,6 @@ void SVGForeignObjectFrame::DoReflow() {
                "unexpected size");
   FinishReflowChild(kid, presContext, desiredSize, &reflowInput, 0, 0,
                     ReflowChildFlags::NoMoveFrame);
-
-  mInReflow = false;
 }
 
 void SVGForeignObjectFrame::AppendDirectlyOwnedAnonBoxes(

layout/svg/SVGForeignObjectFrame.h

@@ -93,8 +93,6 @@ class SVGForeignObjectFrame final : public nsContainerFrame,
   bool IsDisabled() const { return mRect.width <= 0 || mRect.height <= 0; }
 
   UniquePtr<gfxMatrix> mCanvasTM;
-
-  bool mInReflow;
 };
 
 }  // namespace mozilla