third_party/protobuf: Update to HEAD (83d681ee2c)

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

Index: third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.cc b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.cc
index c81c598216e7ef0a9cac0ba9d47bcac720dc60b3..6ced26bc88d2a355e9e03d580b222ccb51fa1654 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.cc
+++ b/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_enum.cc
@@ -189,7 +189,7 @@ void EnumGenerator::GenerateSymbolImports(io::Printer* printer) {
   for (int j = 0; j < descriptor_->value_count(); j++) {
     vars["tag"] = EnumValueName(descriptor_->value(j));
     vars["deprecated_attr"] = descriptor_->value(j)->options().deprecated() ?
-      "PROTOBUF_DEPRECATED_ATTR " : "";
+      "GOOGLE_PROTOBUF_DEPRECATED_ATTR " : "";
     printer->Print(vars,
       "$deprecated_attr$static $constexpr$const $nested_name$ $tag$ =\n"
       "  $classname$_$tag$;\n");
@@ -260,7 +260,7 @@ void EnumGenerator::GenerateMethods(io::Printer* printer) {
 
   printer->Print(vars,
     "bool $classname$_IsValid(int value) {\n"
-    "  switch(value) {\n");
+    "  switch (value) {\n");
 
   // Multiple values may have the same number.  Make sure we only cover
   // each number once by first constructing a set containing all valid