Revert "third_party/protobuf: Update to HEAD (83d681ee2c)"

third_party/protobuf/src/google/protobuf/compiler/importer.cc

 // 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.
@@ skipping 252 matching lines @@
   // backslashes are standard.  Let's avoid confusion and use only forward
   // slashes.
   if (HasPrefixString(path, "\\\\")) {
     // Avoid converting two leading backslashes.
     path = "\\\\" + StringReplace(path.substr(2), "\\", "/", true);
   } else {
     path = StringReplace(path, "\\", "/", true);
   }
 #endif
 
-  std::vector<string> canonical_parts;
-  std::vector<string> parts = Split(
+  vector<string> canonical_parts;
+  vector<string> parts = Split(
       path, "/", true);  // Note:  Removes empty parts.
   for (int i = 0; i < parts.size(); i++) {
     if (parts[i] == ".") {
       // Ignore.
     } else {
       canonical_parts.push_back(parts[i]);
     }
   }
   string result = Join(canonical_parts, "/");
   if (!path.empty() && path[0] == '/') {
@@ skipping 202 matching lines @@
     result->SetCloseOnDelete(true);
     return result;
   } else {
     return NULL;
   }
 }
 
 }  // namespace compiler
 }  // namespace protobuf
 }  // namespace google