Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

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

Index: third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_string_field.h
diff --git a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_string_field.h b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_string_field.h
index af263c1a5b9c1c7335c47d841d20ec687a914bc7..cb4e8772d00725e8ed67470d6d397306b3398a67 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_string_field.h
+++ b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_string_field.h
@@ -58,11 +58,9 @@ class StringFieldGenerator : public FieldGenerator {
                                          bool is_inline) const;
   void GenerateNonInlineAccessorDefinitions(io::Printer* printer) const;
   void GenerateClearingCode(io::Printer* printer) const;
-  void GenerateMessageClearingCode(io::Printer* printer) const;
   void GenerateMergingCode(io::Printer* printer) const;
   void GenerateSwappingCode(io::Printer* printer) const;
   void GenerateConstructorCode(io::Printer* printer) const;
-  void GenerateCopyConstructorCode(io::Printer* printer) const;
   void GenerateDestructorCode(io::Printer* printer) const;
   void GenerateDefaultInstanceAllocator(io::Printer* printer) const;
   void GenerateShutdownCode(io::Printer* printer) const;
@@ -73,7 +71,7 @@ class StringFieldGenerator : public FieldGenerator {
 
  protected:
   const FieldDescriptor* descriptor_;
-  std::map<string, string> variables_;
+  map<string, string> variables_;
 
  private:
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(StringFieldGenerator);
@@ -89,10 +87,6 @@ class StringOneofFieldGenerator : public StringFieldGenerator {
   void GenerateInlineAccessorDefinitions(io::Printer* printer,
                                          bool is_inline) const;
   void GenerateClearingCode(io::Printer* printer) const;
-
-  // StringFieldGenerator, from which we inherit, overrides this so we need to
-  // override it as well.
-  void GenerateMessageClearingCode(io::Printer* printer) const;
   void GenerateSwappingCode(io::Printer* printer) const;
   void GenerateConstructorCode(io::Printer* printer) const;
   void GenerateDestructorCode(io::Printer* printer) const;
@@ -118,7 +112,6 @@ class RepeatedStringFieldGenerator : public FieldGenerator {
   void GenerateMergingCode(io::Printer* printer) const;
   void GenerateSwappingCode(io::Printer* printer) const;
   void GenerateConstructorCode(io::Printer* printer) const;
-  void GenerateCopyConstructorCode(io::Printer* printer) const;
   void GenerateMergeFromCodedStream(io::Printer* printer) const;
   void GenerateSerializeWithCachedSizes(io::Printer* printer) const;
   void GenerateSerializeWithCachedSizesToArray(io::Printer* printer) const;
@@ -126,7 +119,7 @@ class RepeatedStringFieldGenerator : public FieldGenerator {
 
  private:
   const FieldDescriptor* descriptor_;
-  std::map<string, string> variables_;
+  map<string, string> variables_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(RepeatedStringFieldGenerator);
 };