Bug 1454324 - Clear all animation data when we release layer. r=kats

MozReview-Commit-ID: AOGNjLesY0t

--HG--
extra : rebase_source : 4fcb314209a92ea160ca8377d1b7f731239427a6

gfx/layers/Layers.cpp

@@ -212,6 +212,17 @@ Layer::SetCompositorAnimations(const CompositorAnimations& aCompositorAnimations
   Mutated();
 }
 
+void
+Layer::ClearCompositorAnimations()
+{
+  MOZ_LAYERS_LOG_IF_SHADOWABLE(
+    this, ("Layer::Mutated(%p) ClearCompositorAnimations with id=%" PRIu64, this, mAnimationInfo.GetCompositorAnimationsId()));
+
+  mAnimationInfo.ClearAnimations();
+
+  Mutated();
+}
+
 void
 Layer::StartPendingAnimations(const TimeStamp& aReadyTime)
 {

gfx/layers/Layers.h

@@ -1209,6 +1209,8 @@ public:
   // 'initial current time' value.
   void StartPendingAnimations(const TimeStamp& aReadyTime);
 
+  void ClearCompositorAnimations();
+
   /**
    * CONSTRUCTION PHASE ONLY
    * If a layer represents a fixed position element, this data is stored on the

gfx/layers/ipc/LayerTransactionParent.cpp

@@ -979,6 +979,7 @@ LayerTransactionParent::RecvReleaseLayer(const LayerHandle& aHandle)
   if (mAnimStorage &&
       layer->GetCompositorAnimationsId()) {
     mAnimStorage->ClearById(layer->GetCompositorAnimationsId());
+    layer->ClearCompositorAnimations();
   }
   layer->Disconnect();
   return IPC_OK();