Renamed _SS to transitional

ScriptableRenderPipeline/HDRenderPipeline/Editor/UpgradeStandardShaderMaterials.cs

         static List<MaterialUpgrader> GetHDUpgraders_SS()
         {
             var upgraders = new List<MaterialUpgrader>();
-            upgraders.Add(new StandardToHDLitMaterialUpgrader_SS("Standard", "HDRenderPipeline/LitTransitional", LitTransitionalGUI.SetupMaterialKeywordsAndPass));
-            upgraders.Add(new StandardSpecularToHDLitMaterialUpgrader_SS("Standard (Specular setup)", "HDRenderPipeline/LitTransitional", LitTransitionalGUI.SetupMaterialKeywordsAndPass));
+            upgraders.Add(new StandardToHDLitTransitionalMaterialUpgrader("Standard", "HDRenderPipeline/LitTransitional", LitTransitionalGUI.SetupMaterialKeywordsAndPass));
+            upgraders.Add(new StandardSpecularToHDLitTransitionalMaterialUpgrader("Standard (Specular setup)", "HDRenderPipeline/LitTransitional", LitTransitionalGUI.SetupMaterialKeywordsAndPass));
-        [MenuItem("RenderPipeline/HDRenderPipeline/Material Upgraders/Upgrade Standard Materials to Lit Materials (SS) - Project Folder", false, 4)]
+        [MenuItem("RenderPipeline/HDRenderPipeline/Material Upgraders/Upgrade Standard Materials to LitTransitional Materials - Project Folder", false, 4)]
         static void UpgradeMaterialsProject_SS()
         {
             MaterialUpgrader.UpgradeProjectFolder_SS(GetHDUpgraders_SS(), "Upgrade to HD Material");
-        [MenuItem("RenderPipeline/HDRenderPipeline/Material Upgraders/Upgrade Standard Materials to Lit Materials (SS) - Selection", false, 2)]
+        [MenuItem("RenderPipeline/HDRenderPipeline/Material Upgraders/Upgrade Standard Materials to LitTransitional Materials - Selection", false, 5)]
         static void UpgradeMaterialsSelection_SS()
         {
             MaterialUpgrader.UpgradeSelection_SS(GetHDUpgraders_SS(), "Upgrade to HD Material");

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Editor/StandardSpecularToHDLitTransitionalMaterialUpgrader.cs

 
 namespace UnityEditor.Experimental.Rendering.HDPipeline
 {
-    class StandardSpecularToHDLitMaterialUpgrader_SS : MaterialUpgrader
+    class StandardSpecularToHDLitTransitionalMaterialUpgrader : MaterialUpgrader
-        public StandardSpecularToHDLitMaterialUpgrader_SS() : this("Standard (Specular setup)", "HDRenderPipeline/Lit", LitGUI.SetupMaterialKeywordsAndPass) { }
+        public StandardSpecularToHDLitTransitionalMaterialUpgrader() : this("Standard (Specular setup)", "HDRenderPipeline/Lit", LitGUI.SetupMaterialKeywordsAndPass) { }
-        public StandardSpecularToHDLitMaterialUpgrader_SS(string sourceShaderName, string destShaderName, MaterialFinalizer finalizer)
+        public StandardSpecularToHDLitTransitionalMaterialUpgrader(string sourceShaderName, string destShaderName, MaterialFinalizer finalizer)
         {
             // Anything reasonable that can be done here?
             //RenameFloat("_SpecColor", ...);

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/Editor/StandardToHDLitTransitionalMaterialUpgrader.cs

 
 namespace UnityEditor.Experimental.Rendering.HDPipeline
 {
-    public class StandardToHDLitMaterialUpgrader_SS : MaterialUpgrader
+    public class StandardToHDLitTransitionalMaterialUpgrader : MaterialUpgrader
-        public StandardToHDLitMaterialUpgrader_SS() : this("Standard", "HDRenderPipeline/LitTransitional", LitGUI.SetupMaterialKeywordsAndPass) { }
+        public StandardToHDLitTransitionalMaterialUpgrader() : this("Standard", "HDRenderPipeline/LitTransitional", LitGUI.SetupMaterialKeywordsAndPass) { }
-        public StandardToHDLitMaterialUpgrader_SS(string sourceShaderName, string destShaderName, MaterialFinalizer finalizer)
+        public StandardToHDLitTransitionalMaterialUpgrader(string sourceShaderName, string destShaderName, MaterialFinalizer finalizer)
         {
             RenameShader(sourceShaderName, destShaderName, finalizer);