Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/csharp/src/Google.Protobuf/Compatibility/TypeExtensions.cs

Index: third_party/protobuf/csharp/src/Google.Protobuf/Compatibility/TypeExtensions.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/Compatibility/TypeExtensions.cs b/third_party/protobuf/csharp/src/Google.Protobuf/Compatibility/TypeExtensions.cs
deleted file mode 100644
index 762a29eb0a3018d8f5d8eb37f83a50326c34d3bf..0000000000000000000000000000000000000000
--- a/third_party/protobuf/csharp/src/Google.Protobuf/Compatibility/TypeExtensions.cs
+++ /dev/null
@@ -1,113 +0,0 @@
-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2015 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#endregion
-
-using System;
-using System.Reflection;
-
-namespace Google.Protobuf.Compatibility
-{
-    /// <summary>
-    /// Provides extension methods on Type that just proxy to TypeInfo.
-    /// These are used to support the new type system from .NET 4.5, without
-    /// having calls to GetTypeInfo all over the place. While the methods here are meant to be
-    /// broadly compatible with the desktop framework, there are some subtle differences in behaviour - but
-    /// they're not expected to affect our use cases. While the class is internal, that should be fine: we can
-    /// evaluate each new use appropriately.
-    /// </summary>
-    internal static class TypeExtensions
-    {
-        /// <summary>
-        /// Returns true if the target type is a value type, including a nullable value type or an enum, or false
-        /// if it's a reference type (class, delegate, interface - including System.ValueType and System.Enum).
-        /// </summary>
-        internal static bool IsValueType(this Type target)
-        {
-            return target.GetTypeInfo().IsValueType;
-        }
-
-        /// <summary>
-        /// See https://msdn.microsoft.com/en-us/library/system.type.isassignablefrom
-        /// </summary>
-        internal static bool IsAssignableFrom(this Type target, Type c)
-        {
-            return target.GetTypeInfo().IsAssignableFrom(c.GetTypeInfo());
-        }
-
-        /// <summary>
-        /// Returns a representation of the public property associated with the given name in the given type,
-        /// including inherited properties or null if there is no such public property.
-        /// Here, "public property" means a property where either the getter, or the setter, or both, is public.
-        /// </summary>
-        internal static PropertyInfo GetProperty(this Type target, string name)
-        {
-            // GetDeclaredProperty only returns properties declared in the given type, so we need to recurse.
-            while (target != null)
-            {
-                var typeInfo = target.GetTypeInfo();
-                var ret = typeInfo.GetDeclaredProperty(name);
-                if (ret != null && ((ret.CanRead && ret.GetMethod.IsPublic) || (ret.CanWrite && ret.SetMethod.IsPublic)))
-                {
-                    return ret;
-                }
-                target = typeInfo.BaseType;
-            }
-            return null;
-        }
-
-        /// <summary>
-        /// Returns a representation of the public method associated with the given name in the given type,
-        /// including inherited methods.
-        /// </summary>
-        /// <remarks>
-        /// This has a few differences compared with Type.GetMethod in the desktop framework. It will throw
-        /// if there is an ambiguous match even between a private method and a public one, but it *won't* throw
-        /// if there are two overloads at different levels in the type hierarchy (e.g. class Base declares public void Foo(int) and
-        /// class Child : Base declares public void Foo(long)).
-        /// </remarks>
-        /// <exception cref="AmbiguousMatchException">One type in the hierarchy declared more than one method with the same name</exception>
-        internal static MethodInfo GetMethod(this Type target, string name)
-        {
-            // GetDeclaredMethod only returns methods declared in the given type, so we need to recurse.
-            while (target != null)
-            {
-                var typeInfo = target.GetTypeInfo();
-                var ret = typeInfo.GetDeclaredMethod(name);
-                if (ret != null && ret.IsPublic)
-                {
-                    return ret;
-                }
-                target = typeInfo.BaseType;
-            }
-            return null;
-        }
-    }
-}