third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.h

Index: third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.h
diff --git a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.h b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.h
index 90edf0017d55eb2637b7f3566c58e8cc3b9cbe15..0b568c57b926fe800176e30f7f0d6513c7bdc862 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.h
+++ b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.h
@@ -66,7 +66,8 @@ class EnumGenerator {
   // enums. A given key in enum_names will map from an enum class name to the
   // EnumDescriptor that was responsible for its inclusion in the map. This can
   // be used to associate the descriptor with the code generated for it.
-  void FillForwardDeclaration(map<string, const EnumDescriptor*>* enum_names);
+  void FillForwardDeclaration(
+      std::map<string, const EnumDescriptor*>* enum_names);
 
   // Generate header code defining the enum.  This code should be placed
   // within the enum's package namespace, but NOT within any class, even for
@@ -87,7 +88,7 @@ class EnumGenerator {
 
   // Generate code that initializes the global variable storing the enum's
   // descriptor.
-  void GenerateDescriptorInitializer(io::Printer* printer, int index);
+  void GenerateDescriptorInitializer(io::Printer* printer);
 
   // Generate non-inline methods related to the enum, such as IsValidValue().
   // Goes in the .cc file.
@@ -100,6 +101,9 @@ class EnumGenerator {
   // whether to generate the *_ARRAYSIZE constant.
   const bool generate_array_size_;
 
+  int index_in_metadata_;
+
+  friend class FileGenerator;
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(EnumGenerator);
 };