refactor(srp): narrow renderer-data backend seam

project/Assets/Scripts/ProjectRenderPipelineProbe.cs

@@ -204,15 +204,21 @@ namespace ProjectScripts
         {
             return new ProjectCustomRenderer();
         }
+    }
 
-        protected override string GetPipelineRendererAssetKey()
+    public abstract class ProjectBuiltinForwardRendererBackedAsset
+        : RendererBackedRenderPipelineAsset
+    {
+        protected sealed override string
+            GetPipelineRendererAssetKeyContextual(
+                int rendererIndex)
         {
             return "BuiltinForward";
         }
     }
 
     public sealed class ProjectCustomRendererPipelineAsset
-        : RendererBackedRenderPipelineAsset
+        : ProjectBuiltinForwardRendererBackedAsset
     {
         public ProjectCustomRendererPipelineAsset()
         {
@@ -333,11 +339,6 @@ namespace ProjectScripts
             };
         }
 
-        protected override string GetPipelineRendererAssetKey()
-        {
-            return "BuiltinForward";
-        }
-
         public void InvalidateForTest()
         {
             ProjectRendererInvalidationProbeState
@@ -347,7 +348,7 @@ namespace ProjectScripts
     }
 
     public sealed class ProjectRendererInvalidationProbeAsset
-        : RendererBackedRenderPipelineAsset
+        : ProjectBuiltinForwardRendererBackedAsset
     {
         private readonly ProjectRendererInvalidationProbeRendererData
             m_rendererData;
@@ -461,11 +462,6 @@ namespace ProjectScripts
             };
         }
 
-        protected override string GetPipelineRendererAssetKey()
-        {
-            return "BuiltinForward";
-        }
-
         public void InvalidateForTest()
         {
             ProjectPersistentFeatureProbeState
@@ -475,7 +471,7 @@ namespace ProjectScripts
     }
 
     public sealed class ProjectPersistentFeatureProbeAsset
-        : RendererBackedRenderPipelineAsset
+        : ProjectBuiltinForwardRendererBackedAsset
     {
         private readonly ProjectPersistentFeatureProbeRendererData
             m_rendererData;