Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

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

Index: third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_file.h
diff --git a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_file.h b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_file.h
index 25d6eabf937851952636982c3c8055aa81069626..5dcf692bcdeaf03ebb2847d3ea47939994801ad1 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_file.h
+++ b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_file.h
@@ -68,9 +68,6 @@ class FileGenerator {
   FileGenerator(const FileDescriptor* file, const Options& options);
   ~FileGenerator();
 
-  // Shared code between the two header generators below.
-  void GenerateHeader(io::Printer* printer);
-
   // info_path, if non-empty, should be the path (relative to printer's output)
   // to the metadata file describing this proto header.
   void GenerateProtoHeader(io::Printer* printer,
@@ -120,6 +117,18 @@ class FileGenerator {
   // Generates types for classes.
   void GenerateMessageDefinitions(io::Printer* printer);
 
+  // Generates forward-declarations for just this file's classes. This is
+  // used for .pb.h headers, but not in proto_h mode.
+  void GenerateMessageForwardDeclarations(io::Printer* printer);
+
+  // Fills in types for forward declarations. This is used internally, and
+  // also by other FileGenerators to determine imports' declarations.
+  void FillMessageForwardDeclarations(ForwardDeclarations* decls);
+  void FillMessageDefinitions(ForwardDeclarations* decls);
+
+  // Generates enum definitions.
+  void GenerateEnumForwardDeclarations(io::Printer* printer);
+  void FillEnumForwardDeclarations(ForwardDeclarations* decls);
   void GenerateEnumDefinitions(io::Printer* printer);
 
   // Generates generic service definitions.
@@ -136,25 +145,13 @@ class FileGenerator {
   const FileDescriptor* file_;
   const Options options_;
 
-  // Contains the post-order walk of all the messages (and child messages) in
-  // this file. If you need a pre-order walk just reverse iterate.
-  std::vector<MessageGenerator*> message_generators_;
-  std::vector<EnumGenerator*> enum_generators_;
-  std::vector<ServiceGenerator*> service_generators_;
-  std::vector<ExtensionGenerator*> extension_generators_;
-
-  // These members are just for owning (and thus proper deleting). Some of the
-  // message_ and enum_generators above are owned by child messages.
-  google::protobuf::scoped_array<google::protobuf::scoped_ptr<MessageGenerator> >
-      message_generators_owner_;
-  google::protobuf::scoped_array<google::protobuf::scoped_ptr<EnumGenerator> > enum_generators_owner_;
-  google::protobuf::scoped_array<google::protobuf::scoped_ptr<ServiceGenerator> >
-      service_generators_owner_;
-  google::protobuf::scoped_array<google::protobuf::scoped_ptr<ExtensionGenerator> >
-      extension_generators_owner_;
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<MessageGenerator> > message_generators_;
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<EnumGenerator> > enum_generators_;
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<ServiceGenerator> > service_generators_;
+  google::protobuf::scoped_array<google::protobuf::scoped_ptr<ExtensionGenerator> > extension_generators_;
 
   // E.g. if the package is foo.bar, package_parts_ is {"foo", "bar"}.
-  std::vector<string> package_parts_;
+  vector<string> package_parts_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FileGenerator);
 };