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

third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_helpers.h

Index: third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_helpers.h
diff --git a/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_helpers.h b/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_helpers.h
deleted file mode 100644
index 1d17af61be72e0f58034bb04e7d17e20b3235e87..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/compiler/csharp/csharp_helpers.h
+++ /dev/null
@@ -1,132 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 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.
-
-// Author: kenton@google.com (Kenton Varda)
-//  Based on original Protocol Buffers design by
-//  Sanjay Ghemawat, Jeff Dean, and others.
-
-#ifndef GOOGLE_PROTOBUF_COMPILER_CSHARP_HELPERS_H__
-#define GOOGLE_PROTOBUF_COMPILER_CSHARP_HELPERS_H__
-
-#include <string>
-#include <google/protobuf/descriptor.pb.h>
-#include <google/protobuf/descriptor.h>
-#include <google/protobuf/compiler/code_generator.h>
-#include <google/protobuf/io/printer.h>
-
-namespace google {
-namespace protobuf {
-namespace compiler {
-namespace csharp {
-
-class FieldGeneratorBase;
-
-// TODO: start using this enum.
-enum CSharpType {
-  CSHARPTYPE_INT32 = 1,
-  CSHARPTYPE_INT64 = 2,
-  CSHARPTYPE_UINT32 = 3,
-  CSHARPTYPE_UINT64 = 4,
-  CSHARPTYPE_FLOAT = 5,
-  CSHARPTYPE_DOUBLE = 6,
-  CSHARPTYPE_BOOL = 7,
-  CSHARPTYPE_STRING = 8,
-  CSHARPTYPE_BYTESTRING = 9,
-  CSHARPTYPE_MESSAGE = 10,
-  CSHARPTYPE_ENUM = 11,
-  MAX_CSHARPTYPE = 11
-};
-
-// Converts field type to corresponding C# type.
-CSharpType GetCSharpType(FieldDescriptor::Type type);
-
-std::string StripDotProto(const std::string& proto_file);
-
-// Gets unqualified name of the umbrella class
-std::string GetUmbrellaClassUnqualifiedName(const FileDescriptor* descriptor);
-
-// Gets name of the nested for umbrella class (just the nested part,
-// not including the GetFileNamespace part).
-std::string GetUmbrellaClassNestedNamespace(const FileDescriptor* descriptor);
-
-std::string GetClassName(const Descriptor* descriptor);
-
-std::string GetClassName(const EnumDescriptor* descriptor);
-
-std::string GetFieldName(const FieldDescriptor* descriptor);
-
-std::string GetFieldConstantName(const FieldDescriptor* field);
-
-std::string GetPropertyName(const FieldDescriptor* descriptor);
-
-int GetFixedSize(FieldDescriptor::Type type);
-
-std::string UnderscoresToCamelCase(const std::string& input, bool cap_next_letter, bool preserve_period);
-
-inline std::string UnderscoresToCamelCase(const std::string& input, bool cap_next_letter) {
-  return UnderscoresToCamelCase(input, cap_next_letter, false);
-}
-
-std::string UnderscoresToPascalCase(const std::string& input);
-
-// TODO(jtattermusch): perhaps we could move this to strutil
-std::string StringToBase64(const std::string& input);
-
-std::string FileDescriptorToBase64(const FileDescriptor* descriptor);
-
-uint FixedMakeTag(const FieldDescriptor* descriptor);
-
-FieldGeneratorBase* CreateFieldGenerator(const FieldDescriptor* descriptor, int fieldOrdinal);
-
-// Determines whether the given message is a map entry message, i.e. one implicitly created
-// by protoc due to a map<key, value> field.
-inline bool IsMapEntryMessage(const Descriptor* descriptor) {
-  return descriptor->options().map_entry();
-}
-
-// Determines whether we're generating code for the proto representation of descriptors etc,
-// for use in the runtime. This is the only type which is allowed to use proto2 syntax,
-// and it generates internal classes.
-inline bool IsDescriptorProto(const FileDescriptor* descriptor) {
-  // TODO: Do this better! (Currently this depends on a hack in generate_protos.sh to rename
-  // the file...)
-  return descriptor->name() == "google/protobuf/descriptor_proto_file.proto";
-}
-
-inline bool IsWrapperType(const FieldDescriptor* descriptor) {
-  return descriptor->type() == FieldDescriptor::TYPE_MESSAGE &&
-      descriptor->message_type()->file()->name() == "google/protobuf/wrappers.proto";
-}
-
-}  // namespace csharp
-}  // namespace compiler
-}  // namespace protobuf
-}  // namespace google
-#endif  // GOOGLE_PROTOBUF_COMPILER_CSHARP_HELPERS_H__