Bug 1795990. Remove unused nsImageFrame/nsImageBoxFrame::RestartAnimation/StopAnimation. r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D159630

layout/generic/nsImageFrame.cpp

@@ -2813,28 +2813,6 @@ void nsImageFrame::IconLoad::GetPrefs() {
       "browser.display.show_loading_image_placeholder", true);
 }
 
-nsresult nsImageFrame::RestartAnimation() {
-  nsCOMPtr<imgIRequest> currentRequest = GetCurrentRequest();
-
-  if (currentRequest) {
-    bool deregister = false;
-    nsLayoutUtils::RegisterImageRequestIfAnimated(PresContext(), currentRequest,
-                                                  &deregister);
-  }
-  return NS_OK;
-}
-
-nsresult nsImageFrame::StopAnimation() {
-  nsCOMPtr<imgIRequest> currentRequest = GetCurrentRequest();
-
-  if (currentRequest) {
-    bool deregister = true;
-    nsLayoutUtils::DeregisterImageRequest(PresContext(), currentRequest,
-                                          &deregister);
-  }
-  return NS_OK;
-}
-
 void nsImageFrame::IconLoad::Notify(imgIRequest* aRequest, int32_t aType,
                                     const nsIntRect* aData) {
   MOZ_ASSERT(aRequest);

layout/generic/nsImageFrame.h

@@ -131,9 +131,6 @@ class nsImageFrame : public nsAtomicContainerFrame, public nsIReflowCallback {
     }
   }
 
-  nsresult RestartAnimation();
-  nsresult StopAnimation();
-
   already_AddRefed<imgIRequest> GetCurrentRequest() const;
   void Notify(imgIRequest*, int32_t aType, const nsIntRect* aData);
 

layout/xul/nsImageBoxFrame.cpp

@@ -207,20 +207,6 @@ void nsImageBoxFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
   UpdateImage();
 }
 
-void nsImageBoxFrame::RestartAnimation() {
-  if (mImageRequest && !mRequestRegistered) {
-    nsLayoutUtils::RegisterImageRequestIfAnimated(PresContext(), mImageRequest,
-                                                  &mRequestRegistered);
-  }
-}
-
-void nsImageBoxFrame::StopAnimation() {
-  if (mImageRequest && mRequestRegistered) {
-    nsLayoutUtils::DeregisterImageRequest(PresContext(), mImageRequest,
-                                          &mRequestRegistered);
-  }
-}
-
 void nsImageBoxFrame::UpdateImage() {
   nsPresContext* presContext = PresContext();
   Document* doc = presContext->Document();

layout/xul/nsImageBoxFrame.h

@@ -97,9 +97,6 @@ class nsImageBoxFrame final : public nsLeafBoxFrame {
    */
   void UpdateLoadFlags();
 
-  void RestartAnimation();
-  void StopAnimation();
-
   virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
                                 const nsDisplayListSet& aLists) override;