[HDRenderPipelineEditor] Added missing field and field renaming

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/RenderLoopSettings/LightLoopSettingsUI.cs

             {
                 EditorGUI.indentLevel++;
                 EditorGUILayout.PropertyField(p.isFptlEnabled, _.GetContent("Enable FPTL"));
+                EditorGUILayout.PropertyField(p.enableFptlForForwardOpaque, _.GetContent("Enable FPTL For Forward Opaque"));
                 EditorGUILayout.PropertyField(p.enableBigTilePrepass, _.GetContent("Enable Big Tile Prepass"));
                 EditorGUILayout.PropertyField(p.enableComputeLightEvaluation, _.GetContent("Enable Compute Light Evaluation"));
                 GUILayout.BeginVertical();

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/RenderLoopSettings/SerializedHDRenderPipelineAsset.cs

             diffusionProfileSettings = serializedObject.Find((HDRenderPipelineAsset s) => s.diffusionProfileSettings);
 
             renderPipelineSettings = new SerializedRenderPipelineSettings(serializedObject.Find((HDRenderPipelineAsset a) => a.renderPipelineSettings));
-            defaultFrameSettings = new SerializedFrameSettings(serializedObject.Find((HDRenderPipelineAsset a) => a.serializedFrameSettings));
+            defaultFrameSettings = new SerializedFrameSettings(serializedObject.FindProperty("m_FrameSettings"));
         }
 
         public void Update()

ScriptableRenderPipeline/HDRenderPipeline/HDRP/HDRenderPipelineAsset.cs

-namespace UnityEngine.Experimental.Rendering.HDPipeline
+using UnityEngine.Serialization;
+
+namespace UnityEngine.Experimental.Rendering.HDPipeline
 {
     // The HDRenderPipeline assumes linear lighting. Doesn't work with gamma.
     public class HDRenderPipelineAsset : RenderPipelineAsset, ISerializationCallbackReceiver
 
         // To be able to turn on/off FrameSettings properties at runtime for debugging purpose without affecting the original one
         // we create a runtime copy (m_ActiveFrameSettings that is used, and any parametrization is done on serialized frameSettings)
-        public FrameSettings serializedFrameSettings = new FrameSettings(); // This are the defaultFrameSettings for all the camera and apply to sceneView, public to be visible in the inspector
+        [SerializeField]
+        [FormerlySerializedAs("serializedFrameSettings")]
+        FrameSettings m_FrameSettings = new FrameSettings(); // This are the defaultFrameSettings for all the camera and apply to sceneView, public to be visible in the inspector
-        FrameSettings m_FrameSettings = new FrameSettings();
-
+        FrameSettings m_FrameSettingsRuntime = new FrameSettings();
-            return m_FrameSettings;
+            return m_FrameSettingsRuntime;
         }
 
         // Store the various RenderPipelineSettings for each platform (for now only one)
         {
             // Modification of defaultFrameSettings in the inspector will call OnValidate().
             // We do a copy of the settings to those effectively used
-            serializedFrameSettings.CopyTo(m_FrameSettings);
+            m_FrameSettings.CopyTo(m_FrameSettingsRuntime);
         }
     }
 }