Cleanup unused `FormContext` members due to legacy validation removal

- provide new property back for customer use
- remove unused FieldValidationMetadataClass

src/Microsoft.AspNet.Mvc.Core/FormContext.cs

@@ -3,49 +3,31 @@
 
 using System;
 using System.Collections.Generic;
-using Microsoft.AspNet.Mvc.ModelBinding;
+using Microsoft.AspNet.Mvc.Rendering;
 
 namespace Microsoft.AspNet.Mvc
 {
     public class FormContext
     {
-        private readonly Dictionary<string, FieldValidationMetadata> _fieldValidators =
-            new Dictionary<string, FieldValidationMetadata>(StringComparer.Ordinal);
         private readonly Dictionary<string, bool> _renderedFields =
             new Dictionary<string, bool>(StringComparer.Ordinal);
+        private Dictionary<string, object> _formData;
 
-        public IDictionary<string, FieldValidationMetadata> FieldValidators
+        /// <summary>
+        /// Property bag for any information you wish to associate with a {form/} in an <see cref="IHtmlHelper"/>
+        /// implementation or extension method.
+        /// </summary>
+        public IDictionary<string, object> FormData
         {
-            get { return _fieldValidators; }
-        }
-
-        public string FormId { get; set; }
-
-        public bool ReplaceValidationSummary { get; set; }
-
-        public string ValidationSummaryId { get; set; }
-
-        public FieldValidationMetadata GetValidationMetadataForField([NotNull] string fieldName)
-        {
-            return GetValidationMetadataForField(fieldName, createIfNotFound: false);
-        }
-
-        public FieldValidationMetadata GetValidationMetadataForField([NotNull] string fieldName, bool createIfNotFound)
-        {
-            FieldValidationMetadata metadata;
-            if (!FieldValidators.TryGetValue(fieldName, out metadata))
+            get
             {
-                if (createIfNotFound)
+                if (_formData == null)
                 {
-                    metadata = new FieldValidationMetadata()
-                    {
-                        FieldName = fieldName
-                    };
-                    FieldValidators[fieldName] = metadata;
+                    _formData = new Dictionary<string, object>(StringComparer.Ordinal);
                 }
-            }
 
-            return metadata;
+                return _formData;
+            }
         }
 
         public bool RenderedField([NotNull] string fieldName)

src/Microsoft.AspNet.Mvc.ModelBinding/Microsoft.AspNet.Mvc.ModelBinding.kproj

@@ -84,7 +84,6 @@
     <Compile Include="Validation\DataMemberModelValidatorProvider.cs" />
     <Compile Include="Validation\DataTypeAttributeAdapter.cs" />
     <Compile Include="Validation\ErrorModelValidator.cs" />
-    <Compile Include="Validation\FieldValidationMetadata.cs" />
     <Compile Include="Validation\IClientModelValidator.cs" />
     <Compile Include="Validation\IModelValidator.cs" />
     <Compile Include="Validation\IModelValidatorProvider.cs" />

src/Microsoft.AspNet.Mvc.ModelBinding/Validation/FieldValidationMetadata.cs

@@ -1,30 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
-
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-
-namespace Microsoft.AspNet.Mvc.ModelBinding
-{
-    public class FieldValidationMetadata
-    {
-        private readonly List<ModelClientValidationRule> _validationRules =
-            new List<ModelClientValidationRule>();
-        private string _fieldName = string.Empty;
-
-        public string FieldName
-        {
-            get { return _fieldName; }
-            set { _fieldName = value ?? string.Empty; }
-        }
-
-        public bool ReplaceValidationMessageContents { get; set; }
-
-        public string ValidationMessageId { get; set; }
-
-        public IList<ModelClientValidationRule> ValidationRules
-        {
-            get { return _validationRules; }
-        }
-    }
-}