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

third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.cc

Index: third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.cc b/third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.cc
deleted file mode 100644
index 4e348393a3dda89d7f7b2bcd438c4ca1b3b8b8ef..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.cc
+++ /dev/null
@@ -1,136 +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.
-
-#include <iostream>
-
-#include <google/protobuf/compiler/objectivec/objectivec_extension.h>
-#include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
-#include <google/protobuf/descriptor.pb.h>
-#include <google/protobuf/stubs/strutil.h>
-#include <google/protobuf/io/printer.h>
-
-namespace google {
-namespace protobuf {
-namespace compiler {
-namespace objectivec {
-
-ExtensionGenerator::ExtensionGenerator(const string& root_class_name,
-                                       const FieldDescriptor* descriptor)
-    : method_name_(ExtensionMethodName(descriptor)),
-      root_class_and_method_name_(root_class_name + "_" + method_name_),
-      descriptor_(descriptor) {
-  if (descriptor->is_map()) {
-    // NOTE: src/google/protobuf/compiler/plugin.cc makes use of cerr for some
-    // error cases, so it seems to be ok to use as a back door for errors.
-    cerr << "error: Extension is a map<>!"
-         << " That used to be blocked by the compiler." << endl;
-    cerr.flush();
-    abort();
-  }
-}
-
-ExtensionGenerator::~ExtensionGenerator() {}
-
-void ExtensionGenerator::GenerateMembersHeader(io::Printer* printer) {
-  map<string, string> vars;
-  vars["method_name"] = method_name_;
-  SourceLocation location;
-  if (descriptor_->GetSourceLocation(&location)) {
-    vars["comments"] = BuildCommentsString(location);
-  } else {
-    vars["comments"] = "";
-  }
-  printer->Print(vars,
-                 "$comments$"
-                 "+ (GPBExtensionDescriptor *)$method_name$;\n");
-}
-
-void ExtensionGenerator::GenerateStaticVariablesInitialization(
-    io::Printer* printer) {
-  map<string, string> vars;
-  vars["root_class_and_method_name"] = root_class_and_method_name_;
-  vars["extended_type"] = ClassName(descriptor_->containing_type());
-  vars["number"] = SimpleItoa(descriptor_->number());
-
-  std::vector<string> options;
-  if (descriptor_->is_repeated()) options.push_back("GPBExtensionRepeated");
-  if (descriptor_->is_packed()) options.push_back("GPBExtensionPacked");
-  if (descriptor_->containing_type()->options().message_set_wire_format())
-    options.push_back("GPBExtensionSetWireFormat");
-
-  vars["options"] = BuildFlagsString(options);
-
-  ObjectiveCType objc_type = GetObjectiveCType(descriptor_);
-  string singular_type;
-  if (objc_type == OBJECTIVECTYPE_MESSAGE) {
-    vars["type"] = string("GPBStringifySymbol(") +
-                   ClassName(descriptor_->message_type()) + ")";
-  } else {
-    vars["type"] = "NULL";
-  }
-
-  vars["default_name"] = GPBGenericValueFieldName(descriptor_);
-  if (descriptor_->is_repeated()) {
-    vars["default"] = "nil";
-  } else {
-    vars["default"] = DefaultValue(descriptor_);
-  }
-  string type = GetCapitalizedType(descriptor_);
-  vars["extension_type"] = string("GPBDataType") + type;
-
-  if (objc_type == OBJECTIVECTYPE_ENUM) {
-    vars["enum_desc_func_name"] =
-         EnumName(descriptor_->enum_type()) + "_EnumDescriptor";
-  } else {
-    vars["enum_desc_func_name"] = "NULL";
-  }
-
-  printer->Print(vars,
-                 "{\n"
-                 "  .singletonName = GPBStringifySymbol($root_class_and_method_name$),\n"
-                 "  .dataType = $extension_type$,\n"
-                 "  .extendedClass = GPBStringifySymbol($extended_type$),\n"
-                 "  .fieldNumber = $number$,\n"
-                 "  .defaultValue.$default_name$ = $default$,\n"
-                 "  .messageOrGroupClassName = $type$,\n"
-                 "  .options = $options$,\n"
-                 "  .enumDescriptorFunc = $enum_desc_func_name$,\n"
-                 "},\n");
-}
-
-void ExtensionGenerator::GenerateRegistrationSource(io::Printer* printer) {
-  printer->Print(
-      "[registry addExtension:$root_class_and_method_name$];\n",
-      "root_class_and_method_name", root_class_and_method_name_);
-}
-}  // namespace objectivec
-}  // namespace compiler
-}  // namespace protobuf
-}  // namespace google