Add content deprecation system that auto-saves assets in Editor that use old data format

Source/Engine/Content/Assets/AnimationGraph.cpp

@@ -127,7 +127,7 @@ bool AnimationGraph::InitAsAnimation(SkinnedModel* baseModel, Animation* anim, b
     return Graph.Load(&readStream, USE_EDITOR);
 }
 
-BytesContainer AnimationGraph::LoadSurface()
+BytesContainer AnimationGraph::LoadSurface() const
 {
     if (!IsVirtual() && WaitForLoaded())
         return BytesContainer();
@@ -160,19 +160,10 @@ BytesContainer AnimationGraph::LoadSurface()
 
 #if USE_EDITOR
 
-bool AnimationGraph::SaveSurface(BytesContainer& data)
+bool AnimationGraph::SaveSurface(const BytesContainer& data)
 {
-    // Wait for asset to be loaded or don't if last load failed
-    if (LastLoadFailed())
-    {
-        LOG(Warning, "Saving asset that failed to load.");
-    }
-    else if (WaitForLoaded())
-    {
-        LOG(Error, "Asset loading failed. Cannot save it.");
+    if (OnCheckSave())
         return true;
-    }
-
     ScopeLock lock(Locker);
 
     if (IsVirtual())
@@ -228,4 +219,17 @@ void AnimationGraph::GetReferences(Array<Guid>& assets, Array<String>& files) co
     Graph.GetReferences(assets);
 }
 
+bool AnimationGraph::Save(const StringView& path)
+{
+    if (OnCheckSave(path))
+        return true;
+    ScopeLock lock(Locker);
+    MemoryWriteStream writeStream;
+    if (Graph.Save(&writeStream, true))
+        return true;
+    BytesContainer data;
+    data.Link(ToSpan(writeStream));
+    return SaveSurface(data);
+}
+
 #endif